Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f2322a386c87c3f…

MALICIOUS

PDF

40.6 KB Created: 2020-08-17 17:05:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4bb6f91cf6657e73ebe94043e75df56a SHA-1: 52cc63c85e557065b2491e94ad737842d3a1c783 SHA-256: 8f2322a386c87c3fe04e76b03e65ebe97339340a5d4a825d3cf9c9ddca0469f7
202 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a download for 'free printable literature worksheets'. This link redirects to a malicious domain (ttraff.com), indicating a phishing or social engineering lure. The presence of a large number of external PDF links, many hosted on shopify.com, suggests a link farm or SEO poisoning technique to distribute the malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the primary intent appears to be redirecting users to malicious infrastructure.

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.com/pify?keyword=free+printable+literature+worksheets In PDF document text
    • http://kawer.dmawarenessmi.com/uploads/1/3/1/3/131384709/5759009.pdfIn PDF document text
    • http://files.vettefinderjim.com/uploads/1/3/1/6/131636946/lawupumijeli.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/1/0430/9712/9109/files/allusion_in_poetry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5584/0409/files/wizeporanep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/suzavezobefodozed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0765/4563/files/29134933841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7269/2122/files/biosynthesis_of_saturated_fatty_acids.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/dapaguzezanew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/78166803676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/30638262548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/jesus_ringtones_telugu_music.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 1

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_off0000620a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620A 5156 bytes
SHA-256: 2471a98eb8745de8c41666c3ee6114e71e96a7a99fcbc40f15c8e8824471c4e6
font_01_sfnt_off00007396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7396 10072 bytes
SHA-256: 0a807e6c7093cabc182ca63fa57ca96f3796ae1b3f2c13d906a03869815a1992

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