Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e386a0f4995c37…

MALICIOUS

PDF

83.7 KB Created: 2021-05-13 13:44:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 1d2b6d311eca409ec4b0d2cfb9ee8164 SHA-1: 229a29ebb9c744ccc6598c27ab982c08da794efa SHA-256: 60e386a0f4995c374b7184a0bac758a34be38c97af066a55fb47b076bdaf203d
244 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to disposable domains or known malicious redirectors, indicating a link farm designed to distribute malware or phish users. The ClamAV detection and ML classifier further support its malicious nature. The document body, though heavily obfuscated, suggests a lure related to product specifications, likely to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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=sony+xplod+1000w+subwoofer+specs In PDF document text
    • https://cdn-cms.f-static.net/uploads/4484154/normal_5fe9e31db445d.pdfIn PDF document text
    • https://xosulokut.weebly.com/uploads/1/3/4/4/134466674/3827969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385422/normal_5fd9b8f4750f7.pdfIn PDF document text
    • http://lnstagramsupportingcenter.com/john_deere_42_snow_bladehokgv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452593/normal_5fe0aabe2ec62.pdfIn PDF document text
    • http://zomesotemaxage.66ghz.com/63906452471.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490950/normal_5fe773b7474f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370278/normal_60404835350bf.pdfIn PDF document text
    • https://kitenogoxaginup.weebly.com/uploads/1/3/5/2/135298643/6029500.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366347/normal_60399da761950.pdfIn PDF document text
    • https://wakukaxowemaba.weebly.com/uploads/1/3/5/3/135303752/cc55411428c4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368763/normal_5fe75bc6daeec.pdfIn PDF document text
    • http://fexodubavilukub.22web.org/english_for_life_beginner_student_s_book_download.pdfIn PDF document text
    • http://ourfanz.com/46932595107tvos8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454967/normal_60170f666e2b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409602/normal_606d91dc6665c.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/4b8d5843-edfd-4d96-946a-f1ddbb3dd688/ingersoll_rand_30t_parts.pdfIn PDF document text
    • http://kadegezopofog.rf.gd/android_10_update_for_oneplus_3t.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33b228d9-ee56-41d1-ad5a-e6789085a2e1/ipad_mini_and_ipad_air_2_size_comparison.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a301409-9461-4f21-aca8-afcd669f27d0/the_devil_wears_prada_full_movie_free_download_480p.pdfIn PDF document text
    • http://jipidabaxepej.epizy.com/lebiradufuwimaso.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_off0000e406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE406 5636 bytes
SHA-256: b77d3f8cda65cf12dbdb46cd7aacf3e8492deea908f0c9ca6dc53c9277f48881
font_01_sfnt_off0000f766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF766 2504 bytes
SHA-256: 2b4976bd5700831a6739eb7f99079ca960227e63ecdf520b00463d8acf8bf440
font_02_sfnt_off0001024d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024D 12552 bytes
SHA-256: 5279ea826d6fac42bee9f07d0ca9be786ebe93d04c358f0bcd31cca93deffaca
font_03_sfnt_off00012ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE0 16384 bytes
SHA-256: f53b43e12006e3d52612f085e6e184fa5bba3604999f0cb64562e6bb996dc06b

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