Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa37e6ce94d2f2ce…

MALICIOUS

PDF

88.1 KB Created: 2021-04-26 11:30:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: eb587f2b554048ab5f13e834a808ec2b SHA-1: 57bfb6e36ec134b46ff0a9fa8ca8e3617f43340e SHA-256: fa37e6ce94d2f2ce664ec3cec8069c1e11f07de62559603d60260f58a136b124
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://soxebez.ru/strik?utm_term=is+ea+sport+ufc+offline PDF link annotation
    • https://xovelojedawoka.weebly.com/uploads/1/3/4/6/134662979/9178613.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413369/normal_605e11918b147.pdfIn PDF document text
    • https://cdn.sqhk.co/jobezivozuf/YPHhcij/movie_quotes_quiz_1990s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416494/normal_604a19174c355.pdfIn PDF document text
    • https://cdn.sqhk.co/xorilulog/hJZ5xjb/tenifabijatosiranotafuwot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490516/normal_6017c266317c5.pdfIn PDF document text
    • https://gugewixurot.weebly.com/uploads/1/3/4/3/134393699/71ba5.pdfIn PDF document text
    • https://cdn.sqhk.co/zufuxirap/heEVFgg/sound_physicians_emergency_med_of_nv_bessler.pdfIn PDF document text
    • http://kufafukedexepix.mygamesonline.org/abciximab_package_insert.pdfIn PDF document text
    • https://cdn.sqhk.co/pafatewodoju/cbhdjfn/samsung_alpha_phone.pdfIn PDF document text
    • http://goligofalu.medianewsonline.com/bible_quiz_genesis_chapter_22.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://woranuganavot.myartsonline.com/soxozar.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/rumewidosoza.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/bidesiya_song_video.pdfIn PDF document text
    • https://b5526579-b22d-45a0-8251-9885a72cf3eb.filesusr.com/ugd/0cd019_fdb4e7c84fd44e6c8fac8cb2a3994019.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/messenger_for_mac.pdfIn PDF document text
    • https://ba85394b-11ac-4ca4-926b-74ca936c52e1.filesusr.com/ugd/5ccfc8_178310effa0848ab843e5b8975222dc1.pdf?index=trueIn PDF document text
    • https://0a3880f2-9bda-4900-b484-73a003b8a878.filesusr.com/ugd/3cbe5d_c2f915c779c649ab8bb3ce066e2fe4d9.pdf?index=trueIn PDF document text
    • https://9170d309-caca-4186-8987-bf6b40ce219c.filesusr.com/ugd/baef12_eefbe718bb8441b9a2d3025e07fb290f.pdf?index=trueIn PDF document text
    • https://abe99a74-823b-4c5d-85d6-f8d8de52422f.filesusr.com/ugd/73cc63_8ec74a5daa3e4cf7aebd623ac9732554.pdf?index=trueIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e88a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88A 6440 bytes
SHA-256: 2ce5a7286efefc5aae27ce1c31b3347e159d00bd30cf97f509a0b7f7d49caffb
font_01_sfnt_off0000f87f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87F 4828 bytes
SHA-256: 11b73e200dcb36d7778c8f2808c91822960af800904151aee2f1c8d95acea558
font_02_sfnt_off000108f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F2 11252 bytes
SHA-256: 208588e9dace8ad0534f104d5536b2bae281e3f8222f9ce7f3595b812769bac0
font_03_sfnt_off00012fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FE0 16036 bytes
SHA-256: 35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f
font_04_sfnt_off0001444a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1444A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176