Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b5890be53225266…

MALICIOUS

PDF

37.0 KB Created: 2020-08-11 19:59:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a34fb5c51656014820deeb9963bb7e44 SHA-1: 1829ad4be6ab3584b03604e58538593418a0ebc8 SHA-256: 1b5890be53225266b89c76256769502d2882d0f1b4db51768f80259e5abe3dc1
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though malformed, contains the URL 'https://ttraff.com/pify?keyword=imperative+verbs+worksheets+pdf', suggesting a lure to download a worksheet. The presence of numerous other PDF links, many hosted on Shopify, further supports the link farm tactic. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=imperative+verbs+worksheets+pdf In PDF document text
    • http://files.ingridasanchez.com/uploads/1/3/0/8/130874110/xadix_fuxawemuvexo_muvikotugowex_nazukonidosisaz.pdfIn PDF document text
    • http://kapaj.muviscomm.com/uploads/1/3/2/6/132681409/fosajazipufaka.pdfIn PDF document text
    • http://files.burmusik.com/uploads/1/3/1/4/131437247/cb386.pdfIn PDF document text
    • http://files.brandywineseptic.com/uploads/1/3/2/6/132696335/zazamavabutoj.pdfIn PDF document text
    • http://dufafemi.sportingservicesdressage.com/uploads/1/3/2/8/132814930/3ddc202e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4637/7374/files/75140524600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/21126208627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6163/1389/files/all_perfect_tenses_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4469/2383/files/xogojesikebiteboxafefive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/gixabapomigejugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3534/files/83918408745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1958/4166/files/73153517505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9747/3699/files/lufuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4840/2081/files/telorewizolidex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7352/3112/files/july_month_current_affairs_2020_testbook.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4802 5224 bytes
SHA-256: 3d41ab0d4eedbc5094e1c78d518077cb686b2b07c7299b250cd344afe93af1f7
font_01_sfnt_off000059c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C9 9156 bytes
SHA-256: ae63190ffe3a0a4480d1f8667d290a8a6b94a89fe1af3a4a9a648ba2f8e0f0c5
font_02_sfnt_off00007926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7926 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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