Malicious PDF — malware analysis report

Static analysis result for SHA-256 117d504f6382ebab…

MALICIOUS

PDF

58.2 KB Created: 2020-08-01 22:17:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7d28da0832a521583df5ce9b3d433ec SHA-1: 384a4cd57eac59cf896c442daaca7cde8c8fbf06 SHA-256: 117d504f6382ebab746d2cd117dde14ded030e2667e291f255cef83ca36a529e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified as a redirector at 'https://ttraff.cc/pify?keyword=innosilicon+a4+dominator'. This suggests a phishing or scam attempt, likely using the document as a lure for initial access. The ML classifier strongly supports the malicious nature of this PDF.

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=innosilicon+a4+dominator In PDF document text
    • http://files.isfjall.com/uploads/1/3/0/7/130776118/5046925.pdfIn PDF document text
    • http://files.westportyarns.com/uploads/1/3/1/8/131858044/dutinuvuf-fogokas.pdfIn PDF document text
    • http://files.carolinesoutherdencounselling.co.uk/uploads/1/3/1/4/131406527/9444070.pdfIn PDF document text
    • http://files.sasolmc.org/uploads/1/3/0/8/130815437/xuluterevavomi_remuvi_fotafudenalum_nixexasame.pdfIn PDF document text
    • http://files.bespokecabinetworks.co.uk/uploads/1/3/2/7/132740399/2749473.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/1/0431/3651/6250/files/posofenuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/16197601060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/42844917092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0203/5354/files/nolojuwamuxaxedudusisim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0941/7127/files/53648222015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/tuluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/96056081085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6754/7546/files/vomijujokiraxuzax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6284/5859/files/26797566133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1717/3149/files/38578412537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3785448733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1219/4463/files/10404630608.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 5

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C20 17280 bytes
SHA-256: 8f5eb411543e715bdb1d0690050a9da533413168391165a9c2e722907a2f5cab
font_01_sfnt_off0000a280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA280 5112 bytes
SHA-256: 6fc015e72999d74ce30557f6e89360b4b4778deb755b1d5b1da17054e911bdc2
font_02_sfnt_off0000b3d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D0 11964 bytes
SHA-256: f08c073df638ff773bc0bb703ff6cce4f656781b6f1fca49cb88f1792ee57f58

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