Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcbf55c88c6b971c…

MALICIOUS

PDF

42.2 KB Created: 2020-08-18 15:39:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43bf173504786013d5f55e48de225dc1 SHA-1: bb08d8ca85e6847129d3bbcd31260cfa3618cf28 SHA-256: dcbf55c88c6b971c7930371fa3f4eba9526cefe80b7f1e04e64223385cdbc752
202 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, disguised as a 'business card maker program free' download. This is further supported by heuristics indicating a malicious redirector and a link farm designed for SEO manipulation. The presence of a visual call-to-action button reinforces the deceptive nature of the document.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=business+card+maker+program+free In PDF document text
    • http://files.ukyorthoresidency.com/uploads/1/3/1/3/131383247/wamixuxovad.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/1/0429/8565/2375/files/vefufit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/jorge_luis_borges_library_of_babel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/xozav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/zomukusezojofagedubamapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/wixabebakanapekujulowet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9983/1966/files/16898644195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/xivepox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6019/1651/files/nibenodajofirulotobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/arcgis_javascript_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/training_prayer_osrs.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6540 5556 bytes
SHA-256: 04486541e29c30c2e9bd4d058a2702b6021746ca630d52eaa3b6f540cc41a385
font_01_sfnt_off00007811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7811 10648 bytes
SHA-256: 338b542c39e6c7e2de4ea3c79e77237038461ae1c5798e3812050e23590a0d43

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