Malicious PDF — malware analysis report

Static analysis result for SHA-256 af56b6390d6f9210…

MALICIOUS

PDF

46.1 KB Created: 2020-08-16 14:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 303caf309e7919f57a768f32d4cb1568 SHA-1: 8931362211593f8e3f5e6012e1f32df0597d844e SHA-256: af56b6390d6f9210629654c1ec4e10970f2405406ea961d4cbe927f4564d2d57
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'good manufacturing practice guidelines' and the malicious redirector URL, suggesting a lure to trick users into clicking. The ML classifier also strongly indicated maliciousness.

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/pify?keyword=good+manufacturing+practice+guidelines+eu In PDF document text
    • http://files.aboundinlove.com/uploads/1/3/0/9/130969748/goserenan-vevuv.pdfIn PDF document text
    • http://files.thespareroombook.com/uploads/1/3/0/8/130814346/famivuvewunob_fozimuzutopevof.pdfIn PDF document text
    • http://bazejid.abteendrivingacademy.com/uploads/1/3/0/8/130813528/8784126.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/1/0434/3883/3816/files/85298014234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7841/0655/files/94004311055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/63804883754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3097/files/pinatetavolefanivavewasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8019/7031/files/ruterimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9340/1501/files/90145081226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/jonalenumejab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8486/3893/files/kubota_bx2230_operator_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/balemudobit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/lawezitobeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/63523964285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pajovi.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_off000072f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F7 5508 bytes
SHA-256: 623fb49c43e780bfa241d5d4137a92d7f86e01f12b69cf44189044fbc5661d4a
font_01_sfnt_off0000859c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859C 12004 bytes
SHA-256: 4e307b7d3527b0b89dc065a5601999f01db29765fb2d9e1441156bf3d94c4b51

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