Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0fb2cc72b3ef6a6…

MALICIOUS

PDF

90.8 KB Created: 2021-04-06 13:37:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 8c80e90c79230b0ca159da93a2856c41 SHA-1: 338e6073231ffc6db3393e791fbf19c4be2c4390 SHA-256: f0fb2cc72b3ef6a6275202a0e499d82da9b2f00ab750da6ee2a6a1b4c2877214
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable domains, suggesting a link farm used for SEO manipulation or phishing. The primary URL, 'https://lozipotod.ru/wix?keyword=how+to+get+free+tiktok+likes+and+fans+without+human+verification', directly indicates a lure for social media engagement scams. While no scripts were explicitly extracted, the PDF structure and link farm heuristics strongly suggest malicious intent, likely to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 6

  • 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 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.
  • 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://lozipotod.ru/wix?keyword=how+to+get+free+tiktok+likes+and+fans+without+human+verification PDF link annotation
    • https://cdn.sqhk.co/takoxuwal/xXhchhd/71934686262.pdfIn PDF document text
    • https://kitorulefif.weebly.com/uploads/1/3/4/3/134331375/2467563.pdfIn PDF document text
    • http://rozel.ru/112987335342j0xc.pdfIn PDF document text
    • https://kujakaxu.weebly.com/uploads/1/3/5/3/135347331/zaxudevenekan_wivan_wusivuvifi_dijivifebe.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/hhjdhid/43068504625.pdfIn PDF document text
    • http://lovelyhouse.online/juvebafeynowt.pdfIn PDF document text
    • https://cdn.sqhk.co/wifukatar/hnOgchc/nevomipibego.pdfIn PDF document text
    • https://dodarumobite.weebly.com/uploads/1/3/1/4/131437296/voxiwuzapejiwe.pdfIn PDF document text
    • https://sesirolomozanu.weebly.com/uploads/1/3/2/7/132741009/4329520.pdfIn PDF document text
    • https://cdn.sqhk.co/kumotuxijufu/hajhdq6/kokisenusogala.pdfIn PDF document text
    • https://cdn.sqhk.co/bepeguvovori/oticQ22/rally_championship_ps2_iso.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/b5pYrVu/30046176157.pdfIn PDF document text
    • http://pubggaming.online/68082093039vyltb.pdfIn PDF document text
    • https://sunakolezapomuj.weebly.com/uploads/1/3/4/6/134698053/nufepuj_fewirapekik.pdfIn PDF document text
    • http://voyazh-shina.com/bad_boy_dance_song_mr_jatte8o2b.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/aGThf0b/starz_free_preview_spectrum.pdfIn PDF document text
    • http://tersq.fun/1__3v22m1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/39e7af6f-0309-4ca3-bf39-6f6ca41ced1a/what_is_italian_renaissance_art.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28db2c8c-a173-4faa-8a1d-d87f8993aae8/do_meal_replacement_shakes_help_gain_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/531d224d-95e6-4fca-b946-555602b72108/how_to_write_a_paper_in_mla_style.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccced44e-96e3-45b1-bc97-536c7d71c11e/28816194421.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3afc539-9359-4d25-8407-501266c91b50/how_to_thread_a_brother_xm2701.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e4f24c1-bff2-499d-81ed-4e250993032e/juterexunizomukavazesoni.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://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_off0000fa69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA69 5612 bytes
SHA-256: 972856c36cd2b354f20294f9b197865ada40d86dc2bef516a7258b2951076530
font_01_sfnt_off00010d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D6C 3068 bytes
SHA-256: f1735e4537ffc45ab94d4499fa60e885eb18f41d0fde8c5eca09df3bc54e45ba
font_02_sfnt_off000119fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119FD 13052 bytes
SHA-256: b9da5a7cb0f7a6dc8e9f456e03ff97277bac6729fab6b634e4f5f145fbe26782
font_03_sfnt_off0001445b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1445B 16488 bytes
SHA-256: 021eaf6e245db5e9796d6b6553760bdf6420435298fcceecd052273e6f7cbf38