Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdd46bb069e532e6…

MALICIOUS

PDF

80.4 KB Created: 2021-04-12 19:50:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b55c73facb9a99520537cb4b2913d84a SHA-1: 772ae424d825bdba0bfd17958169fd4fb0ffb11e SHA-256: cdd46bb069e532e6e2bf0c4e7308be0b1aeba1afe2794f25ea4a5d1462a4aff7
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a tactic to manipulate search engine results or redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and external links are indicative of a malicious document designed to lead users to further compromised resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dafemum.ru/strik?utm_term=how+often+does+old+navy+restock
    • https://cdn.sqhk.co/fanabezom/ahaBSji/okta_stock_news.pdf
    • https://cdn.sqhk.co/tedavevata/Nyhehgj/war_full_hd_movies_free.pdf
    • https://cdn.sqhk.co/lakabarobuk/gTBhhb2/good_airplane_movies_on_netflix.pdf
    • https://cdn.sqhk.co/wobuwozavenu/heiirhh/dragy_gps_performance_box_review.pdf
    • http://sanalunuguto.22web.org/rationale_zahlen_gemischte_aufgaben.pdf
    • https://gavofazipog.weebly.com/uploads/1/3/3/9/133999173/1837060.pdf
    • https://jizexukufi.weebly.com/uploads/1/3/4/1/134109318/jimawuwabovikig.pdf
    • https://cdn.sqhk.co/zekafomaze/ru9gcji/guitar_hero_rock_the_80s_ps3.pdf
    • https://cdn.sqhk.co/tobijoge/ijjdoKq/elite_dangerous_orbit_lines_on_or_off.pdf
    • https://ligonulijer.weebly.com/uploads/1/3/5/3/135318365/5547079.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://rukevoseworo.rf.gd/how_to_fix_a_diaper_genie.pdf
    • https://uploads.strikinglycdn.com/files/648be5dc-9b75-4c1f-a0e8-f3ac97699c9f/gubomim.pdf
    • https://uploads.strikinglycdn.com/files/3efed351-050c-447f-a03e-d6583140a7aa/pilisotitotar.pdf
    • https://uploads.strikinglycdn.com/files/3b1e03ed-8559-4d2e-84ec-76e08cdf8a60/pexinosukumede.pdf
    • https://uploads.strikinglycdn.com/files/381c9358-d49a-4c1f-b50e-3283bdb7be40/28347977454.pdf
    • https://uploads.strikinglycdn.com/files/e57545e4-cfb9-4437-aabf-cbd1ff175d71/are_old_golf_magazines_worth_anything.pdf
    • https://uploads.strikinglycdn.com/files/f4bbd59f-7f15-4e74-bb57-5ed96a5040f7/what_is_osha_29_cfr_1926.pdf
    • http://sezulezaba.rf.gd/revision_timetable_template_google_sheets.pdf
    • http://nenutufap.epizy.com/welizef.pdf
    • https://uploads.strikinglycdn.com/files/c5ec7f2a-86ec-4124-8158-c638004c9edd/20370071798.pdf
    • https://uploads.strikinglycdn.com/files/b4004fa9-a72e-4aeb-8d2b-6fbf54015706/samsung_galaxy_s9_latest_price.pdf
    • http://kafojifonetawaj.rf.gd/farming_simulator_switch_guide.pdf
    • https://uploads.strikinglycdn.com/files/ca8cb7a7-0c2c-4fba-a67b-038a22603347/what_is_the_largest_renaissance_festival_in_the_united_states.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f091.bin
96922d653e8648026e9c106ade9cdfa69317970347017e2feaddddb7cc42a6fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF091 5036 bytes
font_01_sfnt_off000101df.bin
f8c2d1a7ee605aa72989eb7ef73e6b7b6bf04b9bf123d2552764b0c61be052b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101DF 10468 bytes
font_02_sfnt_off000125c5.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125C5 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.