Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2cc2b72021657df…

MALICIOUS

PDF

68.7 KB Created: 2021-03-04 15:02:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 2a873b1b8a3e658deda6d13fa2bcab61 SHA-1: 091fe48c2dc6668937f49de7d9bfcff3ee34c986 SHA-256: a2cc2b72021657dfe6cfb84b1dfd9e1a708ddc25a13c084ecf1394f9983608dc
182 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also flagged the PDF as malicious. While the document body is heavily obfuscated, the presence of malicious links strongly suggests an attempt to phish or redirect the user to a malicious site, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8570

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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.
  • 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://crophysi.ru/wix?keyword=ut+tom+black+track In PDF document text
    • http://magazinrf.xyz/xolefegopapozinemkhc.pdfIn PDF document text
    • http://familyit.pro/jingle_bells_bass_guitar_sheet_musicygyr8.pdfIn PDF document text
    • https://malafusid.weebly.com/uploads/1/3/2/8/132815748/gogirosopateg.pdfIn PDF document text
    • https://rosujukasawi.weebly.com/uploads/1/3/5/3/135301647/8078214.pdfIn PDF document text
    • https://xevulesej.weebly.com/uploads/1/3/0/8/130874496/1423778.pdfIn PDF document text
    • http://fb-ig-copyright.com/68493967721xe7w8.pdfIn PDF document text
    • http://orbitan.fun/william_faulkner_a_rose_for_emily1pjfr.pdfIn PDF document text
    • http://kraftmann.su/mesa_boogie_dual_rectifier_head8h2q6.pdfIn PDF document text
    • http://interbank.link/zufalabllrxo.pdfIn PDF document text
    • http://simkosa.website/3798803965587u6y.pdfIn PDF document text
    • http://prodit.space/28362098778i99tl.pdfIn PDF document text
    • https://funugunuxu.weebly.com/uploads/1/3/4/3/134384448/ed78730db.pdfIn PDF document text
    • http://bbflowers.net/43963492613wu2pt.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/6967a440-37a6-4826-aacd-30443ec0ad4e/sibar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1be4417-e8b5-4ac3-af4b-a87ecff03dee/ingersoll_rand_ssr-ep150_parts.pdfIn PDF document text
    • https://f85e9a30-dbb9-40fd-a66d-53bd7daafe07.filesusr.com/ugd/1b9faa_20a6e91f2e65445f83d398392c90c267.pdf?index=trueIn PDF document text
    • https://e924225a-aa46-4bfc-8e56-7341551e1833.filesusr.com/ugd/54dfea_72a47abc47df4779bc9cfd9bbdb0662a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/915421d3-3bd7-40e2-9a77-71647179e7b1/53850013477.pdfIn PDF document text
    • http://dapizodipe.myartsonline.com/luvevojerevizepum.pdfIn PDF document text
    • http://tososite.onlinewebshop.net/how_to_fix_a_craftsman_air_compressor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84585541-535b-41e1-b450-0f3712deb820/83523435740.pdfIn PDF document text
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_3b09d08439b84165b5d8ea21163de079.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e621.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE621 4480 bytes
SHA-256: 258a190ee2c8a76f8b4e0f7087a561eb4f589d6b0110e2ad810bb37ef78eb486
font_01_sfnt_off0000f555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF555 10612 bytes
SHA-256: 62686177d13f6e853ae2c98b9c4868800a25b7b1c2f5f7f91cfdb228f51253ef

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