Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82a56a827218075…

MALICIOUS

PDF

38.3 KB Created: 2020-08-13 16:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c5bacf3e949706c30bc4ce51a5445e9 SHA-1: 601fa427e39e5cd772a6f67936009e61fe75df56 SHA-256: c82a56a82721807558579d34a29d4834663896a382242ed7dc3421476244d99a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body text, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to lure users to a potentially malicious site. The presence of a link farm and a malicious redirector indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.cc/wb?keyword=nic%20noc%20nanda%20pdf%20descargar%20gratis In PDF document text
    • http://files.counsellingpsychologist.services/uploads/1/3/1/4/131411762/powiwup.pdfIn PDF document text
    • http://files.deepaklalsaini.com/uploads/1/3/2/7/132740553/fever.pdfIn PDF document text
    • http://files.wirralcpd.co.uk/uploads/1/3/2/6/132681823/gewir_fuvisobob_vewugejevukid.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/1/0437/3705/5393/files/77179627166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4147/8040/files/tutorial_adobe_premiere_pro_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/61175015045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4991/8374/files/xigobuwufaxulufinibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5177/7185/files/tedas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4527/3251/files/barry_cunliffe_the_ancient_celts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/60077192502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9571/files/61672924426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3609/0273/files/85136929844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6960/2978/files/upsc_zoology_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0441/1556/files/43910224416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/54733738918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90379225571.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 6

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_off00005433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5433 5260 bytes
SHA-256: e32f4992dd7b49780e6508fc2bc4949e8cf783cfa58021524befa4747546f64f
font_01_sfnt_off0000661f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661F 11220 bytes
SHA-256: 891f4b40a665a787ee9283f8c218bbea054d3164087c0886c38045d1aa55ea8f

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