Malicious PDF — malware analysis report

Static analysis result for SHA-256 af6aa5c8058b93b3…

MALICIOUS

PDF

40.4 KB Created: 2020-08-14 05:36:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d149b4eace4eb10f33b8c86d4ca42bb5 SHA-1: 8dde439c8b332728c55e6af1208bda4f5668d703 SHA-256: af6aa5c8058b93b30dac763f9b16455812fcaf385175e0b24538e12dc905507e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector infrastructure designed for SEO spam and phishing. The primary lure appears to be a "Craftsman 20 gallon air compressor manual" which redirects to `https://ttraff.cc/wb?keyword=craftsman%2020%20gallon%20air%20compressor%20manual`. This redirector likely leads to a malicious payload or phishing page. 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/wb?keyword=craftsman%2020%20gallon%20air%20compressor%20manual In PDF document text
    • http://files.nayaritbeachfrontproperties.com/uploads/1/3/2/7/132710763/279501a6593fde.pdfIn PDF document text
    • http://files.jackiecheuvront.com/uploads/1/3/1/4/131454172/b48c3e2b491c5f9.pdfIn PDF document text
    • http://files.johnlalla.com/uploads/1/3/1/4/131453393/nefuxaxikozodiguza.pdfIn PDF document text
    • http://files.spamitzvah.com/uploads/1/3/1/3/131384789/2268709.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/1/0431/1564/3042/files/66572363160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1312/7835/files/82796634670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/33073583526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6345/9496/files/reba_fancy_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9889/7574/files/ruwimade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/77492846043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6055/7974/files/gebejewizupavobavoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7386/2808/files/lateral_thinking_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/gojidare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6944/6046/files/nifomuvapaladoruteset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2660/4447/files/58532992547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5879/8492/files/79427070587.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_off00005f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F37 5516 bytes
SHA-256: 26b17a8076dd2389a5295da587c71d8e399aeaadb14abd955afb788140123c15
font_01_sfnt_off000071dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71DC 10176 bytes
SHA-256: cb43f45585de0b2a2072fb8d68a7325aaf3ee701b292d65c21e8e6197b37cb51

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