Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ac38e55c22ab5f9…

MALICIOUS

PDF

72.8 KB Created: 2020-08-03 23:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 500297cc4c72289accb15adce93f0da9 SHA-1: a89674b244acf85ff1c62169a6216c9bd0e0ee0a SHA-256: 8ac38e55c22ab5f923739c1a6d1bd8e94555da28f63eb1e9de97b7f5a5598b76
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to a known malicious redirector, specifically `https://ttraff.ru/pify?keyword=abraham+maslow+theory+of+learning+pdf`. It also contains a PDF link farm heuristic, with many links pointing to Shopify domains, one of which is `https://cdn.shopify.com/s/files/1/0429/8512/8090/files/3711405936.pdf`. The document body, though heavily obfuscated, contains the same lure text and the malicious URL, suggesting the primary purpose is to redirect users to malicious content.

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.ru/pify?keyword=abraham+maslow+theory+of+learning+pdf In PDF document text
    • http://files.everywhere2everywhere.org/uploads/1/3/1/6/131636834/melik.pdfIn PDF document text
    • http://files.coratoloassociatesllc.com/uploads/1/3/2/6/132696580/d5f45e5.pdfIn PDF document text
    • http://files.misplacedolls.com/uploads/1/3/0/7/130775506/giridigododubi.pdfIn PDF document text
    • http://files.partycentralmd.com/uploads/1/3/1/1/131164275/3bae59.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/1/0429/8512/8090/files/3711405936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6406/5174/files/kadonuzema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/fodidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9726/7112/files/mabokidalowala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0765/3526/files/bezonuzimeropa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/67559187557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/labozokutetelewagenak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/69316220119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2911/8627/files/puntos_de_partida_9th_edition_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4351/8629/files/mikedibinarewinemikav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0090/files/jalewaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/lokevitovitofuroge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/86132101214.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_off0000dd5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5C 5776 bytes
SHA-256: 1355bef3d549f8770f6b0b484c2e2556980b968a5321e7bc06d8f9dc6d306e24
font_01_sfnt_off0000f0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F4 10900 bytes
SHA-256: 8876bacc1781e70d0ed197ad3f6cab2bc26851a5dbdd849fc347fd950cb1095d

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