Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee211ffcf534686…

MALICIOUS

PDF

77.4 KB Created: 2021-03-06 02:13:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a7dfed07d4fbf78158f4a363ebd9fb63 SHA-1: dd4a6b9ca545316b17d7f09f3331256473437ea8 SHA-256: 2ee211ffcf5346861462e7a58280c038a618a37b73a2a71762a26870d7b975cc
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as a link farm and by a machine learning classifier as malicious. It contains numerous external links, with one prominent URL being https://jottigo.ru/strik?utm_term=what+is+documentary+landscape+photography. The presence of a link farm suggests an attempt to manipulate search engine results or redirect users to potentially harmful content. Although no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/strik?utm_term=what+is+documentary+landscape+photography PDF link annotation
    • http://zovanatul.iblogger.org/cydia_installer_1._1._30.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/how_much_is_a_bowflex_bike.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
    • https://45ed8376-e832-497f-ab20-0a31924dc5db.filesusr.com/ugd/4b7290_708d7a9617884b9ea217f5b11773d965.pdf?index=trueIn PDF document text
    • https://ff06b2c9-6223-4357-b4d5-1bf3807c749f.filesusr.com/ugd/717131_42456bd52dab4875930108a7b049416a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2270cbbd-03f6-416d-973a-dd1ba30cc78b/2014_ford_e250_cargo_van_for_sale.pdfIn PDF document text
    • https://ed8bc375-cd54-49ab-9ddb-988cb5b2fc3d.filesusr.com/ugd/3f3824_cc40cc9bd0224544b41acd1c281ac4a8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fixararololu/rifip.pdfIn PDF document text
    • https://76df98a8-3e94-4eee-a6f5-23e1de06049b.filesusr.com/ugd/54c74c_4d5cc8ff65964457a4ef2bbc9defc728.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a525a0a6-b6f4-44b1-bedb-17cf86d5928a/jejowezoje.pdfIn PDF document text
    • http://tizepadeda.rf.gd/35122166470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a55b58a5-e84d-46ce-863d-ba88f4531270/new_york_subway_mta_map_app.pdfIn PDF document text
    • http://xukenefurirog.epizy.com/chotu_ke_chutkule_photo.pdfIn PDF document text
    • https://91e55214-10ad-44cf-a10a-60a9392df58b.filesusr.com/ugd/e1c37d_482864d6c4b84d408bdbf74edc72a701.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/hp_6700_printer_failure.pdfIn PDF document text
    • https://1c019786-7048-4615-837a-ae53f087c4ae.filesusr.com/ugd/8b4172_79c96c101ff6429d8884e86cf7a66e12.pdf?index=trueIn PDF document text
    • http://xowobovu.myartsonline.com/42292970792.pdfIn PDF document text
    • http://gafuxibeveguv.rf.gd/how_to_start_a_pawnshop_business.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc8e2c8e-3659-4cb2-a770-8f608ad241e1/odd_thomas_dean_koontz_series.pdfIn PDF document text
    • https://e0f910ba-f4aa-4d6b-87f6-24d78cda99ab.filesusr.com/ugd/cc15ef_a4b2d2b121044530afce85a178964630.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e39e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39E 5484 bytes
SHA-256: 958d7371a6ba716da470eafda06b44da30da0ab052c6b3c3f9ea550bff68d4f6
font_01_sfnt_off0000f627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF627 10560 bytes
SHA-256: 2b9022bdedea978ce00b4b1782c2ac6ee181e6e9501358e0d42feab6a89f6d35
font_02_sfnt_off00011a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A2D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f