Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a3eee4fe2f92c12…

MALICIOUS

PDF

47.8 KB Created: 2020-07-31 11:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ccef3234ac1079d547f0ce6dbbf945c SHA-1: 5383c17fa0036e4229b0e5debec80a4468df3965 SHA-256: 1a3eee4fe2f92c1265a435e8d4373988915bf84176ed703a8d7b4343f5bbca19
202 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The document body, though heavily obfuscated, suggests a lure related to a 'mobile phone repair course download pdf'. The primary malicious IOC is the redirector URL, which is part of a known malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ttraff.ru/pify?keyword=mobile+phone+repair+course+download+pdf In PDF document text
    • http://files.shannabutler.com/uploads/1/3/0/8/130814475/3616428.pdfIn PDF document text
    • http://files.astonialandscaping.ca/uploads/1/3/0/7/130738548/ba1992.pdfIn PDF document text
    • http://files.graciasgreenhouse.com/uploads/1/3/1/6/131636807/mexetaw_milibone_muvowifivido.pdfIn PDF document text
    • http://files.juniatacountytroutclub.com/uploads/1/3/1/6/131637362/4272173.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/26706221444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7764/0093/files/21390946668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/foguwukoxumikevuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9648/7576/files/xejadajenuzebuzizajaseguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7446/0579/files/begikexevusifenuridexosos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8189/8913/files/25687867152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/vubikenusodarofiluvabep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7686/8510/files/89931759777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4632/9750/files/powome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mupesoxozuwimufuvijolus.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ce0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE0 5280 bytes
SHA-256: a00b272168cf502faef1e8b88fb50535234c3c068d0cbf07d368a8d8d0f45afd
font_01_sfnt_off00008ec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC6 10280 bytes
SHA-256: c707ec670286d031d60e15e5f49d8e81eb304ad9bd0c9962b15f7eaa567a7266

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