Malicious PDF — malware analysis report

Static analysis result for SHA-256 e70694416985e9f5…

MALICIOUS

PDF

88.0 KB Created: 2021-03-14 16:24:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: d0e544358a429d29fa3c299904ba4a08 SHA-1: 558f67d130e346e04aaba816ee357628e75c9f35 SHA-256: e70694416985e9f57774b62c04e4936aa280e4ec29070162ae3c2863823db6d1
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious intent, including suspicious and invisible links to external domains, and is flagged by ML classifiers and ClamAV as a phishing/trojan. The document body and embedded URLs suggest a lure related to "Clash of Clans hack wifi code" to trick users into clicking on malicious links, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://golowaki.ru/wix?keyword=clash+of+clans+hack+wifi+code PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412889/normal_603a7aceced89.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/6HIK8ig/pomudupixejikiwiludakij.pdfIn PDF document text
    • https://cdn.sqhk.co/sadetujadufi/hhahdSA/xubigegil.pdfIn PDF document text
    • http://securityofusersdevicesonline.site/99390211606lc0wd.pdfIn PDF document text
    • https://cdn.sqhk.co/gagunewatevo/jJheCie/26325620933.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxiwugo/jdhbVgi/minecraft_free_game_download_java_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/foxidagon/rjjAige/birthday_invitation_templates_mac_pages.pdfIn PDF document text
    • http://umdtheatre.ru/lekejomomepisawojudituti8rlp9.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/N7vjdGr/electrical_wiring_diagram_symbols.pdfIn PDF document text
    • http://robertferrell.net/feboriwifujalo95bl.pdfIn PDF document text
    • https://cdn.sqhk.co/pasojixaju/jggcujc/cookie_clicker_cheat_version.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466676/normal_5fee0f344cb37.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485322/normal_5fd07575ae81d.pdfIn PDF document text
    • http://rulabepotinujeb.mypressonline.com/23483076641.pdfIn PDF document text
    • http://vipadminler.org/database_security_tools_list9ivzw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427785/normal_600190274e75c.pdfIn PDF document text
    • http://leqqurint.online/how_to_program_a_magnavox_universal_remote_to_a_philips_tvm0nyi.pdfIn PDF document text
    • http://risumeboze.getenjoyment.net/zimexufage.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375515/normal_601a480b69bff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/kawamav.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/nixituweta.pdfIn PDF document text
    • http://polilofu.onlinewebshop.net/on_the_road_jack_kerouac_book_review.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/debimuwapexokugojuf.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/ganamrutha_bodhini_sangeetha_bala_padam_english_paperback.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/kanubupejaze.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF630 5076 bytes
SHA-256: 6afcd01373ce511f2ca838addae1ed59feca19e6ca4bf6971ae1db8153a1957d
font_01_sfnt_off0001077b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077B 5852 bytes
SHA-256: e197c3daed01507d2166f9aa476220777787e91ae28780e40f08fcf4deb9861b
font_02_sfnt_off00011634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11634 11488 bytes
SHA-256: b8420acdf607146dd8a10ad60d67fb946a2fdb5a191d5eeace0c10e4b119a5f4
font_03_sfnt_off00013d8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D8E 16028 bytes
SHA-256: 0bae8649ba252bcfab81cb8324cfe1737d73e47191b507e117e6d0858e0066a8