Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda82b655ab55acb…

MALICIOUS

PDF

41.8 KB Created: 2020-08-16 15:27:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7f6727dfccae2eeb67c4c41f89ee8a6 SHA-1: 46472ab88afee35a1848d120758e47ba0c30b3da SHA-256: fda82b655ab55acbee360ec77c0e48d266c3062f91cc594b221e8f1d835e39a0
234 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially garbled, contains text related to 'defining relative clauses exercises pdf with answers' and a URL that appears to be a lure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=defining+relative+clauses+exercises+pdf+with+answers, which redirects to other content. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning attempt.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=defining+relative+clauses+exercises+pdf+with+answers In PDF document text
    • http://vijawupun.transformationalastrologyandtarot.com/uploads/1/3/2/6/132681862/7fe904380c9.pdfIn PDF document text
    • http://files.4rentinelkford.com/uploads/1/3/0/7/130739789/208265d5a1.pdfIn PDF document text
    • http://najip.maxwelled.com/uploads/1/3/0/8/130814229/pararivimekatopaper.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/1/0437/8948/4189/files/11090755617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/gozidinusegurilemitatas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0677/8784/files/87719430519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/baldur_s_gate_2_enhanced_edition_walkthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2112/2208/files/46181199831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5680/8607/files/jikotorokorotudenudaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4154/4600/files/18180697590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3911/9765/files/jipakakegevozotegofobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9734/1604/files/ropojolemuxinudiginagu.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 4

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_off0000636c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636C 5636 bytes
SHA-256: 90c901cbda1377a58ae66cd14fd5e4b0d518e8372f118cd0e6366f1755ad4eb7
font_01_sfnt_off000076b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B3 10364 bytes
SHA-256: 0f5f843cfa919796ae2735f1924a6d1e3f2983f0ca53fb83cdbf2b07ec5b62c8

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