Malicious PDF — malware analysis report

Static analysis result for SHA-256 14c8e1436eacec17…

MALICIOUS

PDF

35.6 KB Created: 2020-08-05 00:05:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 05c74b8833354342d003b65cb9cbd23b SHA-1: 0c5c59ce7bacbce8922637fc720646edb190c5a8 SHA-256: 14c8e1436eacec17dc6e2484b75bf16e1f10c5255ced10cd74fca742f0e29455
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one to a known malicious redirector, disguised as a document about present tense exercises. The redirector URL is https://ttraff.cc/pify?keyword=to+be+simple+present+tense+exercises+pdf, which likely leads to a phishing or malware download site. 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/pify?keyword=to+be+simple+present+tense+exercises+pdf In PDF document text
    • http://files.mtbafghanistan.org/uploads/1/3/1/3/131380618/7011301.pdfIn PDF document text
    • http://files.gocentralbaseball.com/uploads/1/3/0/9/130969847/fomiwuwaxukomofike.pdfIn PDF document text
    • http://files.phoenixrunners.ca/uploads/1/3/2/6/132683252/f83b32631a9f626.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/1/0440/5064/5157/files/79509239719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3881/8982/files/sulivifegubuliw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7914/5374/files/48742936025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9621/0594/files/40974151375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/69040393223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/namujoloxifigitodet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/texis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4141/5587/files/rajokemibupigib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/tidisididonerejanoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53567737566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9635/7530/files/jaduwal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4305/1937/files/49579739010.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 6

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_off00004d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D57 5248 bytes
SHA-256: a51f37e977c2b458f3b75598396c6aff527344c29a920a577087e982770a7295
font_01_sfnt_off00005f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F17 10052 bytes
SHA-256: 1becb4b9391489dd58d2e05649429bc25571d22bd36d98cb58fc6aafddd0f317

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