Malicious PDF — malware analysis report

Static analysis result for SHA-256 63cb52910c84cd0d…

MALICIOUS

PDF

35.7 KB Created: 2020-08-18 22:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00d1ae97e4b14d0e80c6a0b40a6dbca6 SHA-1: 891d750a119fa695343fc47b3668a5efbed1ae63 SHA-256: 63cb52910c84cd0d324194e3ac555a9e3c85ff6ce01d32e8cee51303837d6e9d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which point to a redirector service. The primary redirector URL, 'https://ttraff.cc/pify?keyword=cursive+writing+worksheets+small+letters', is flagged as malicious. This suggests the document is designed to lead users to potentially harmful content through a link farm, likely for phishing or malware distribution.

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=cursive+writing+worksheets+small+letters In PDF document text
    • http://jajuvex.lotusbud.co.uk/uploads/1/3/2/6/132682327/bitiwuvadak-lidake.pdfIn PDF document text
    • http://files.mccrayaccountingservices.com/uploads/1/3/0/7/130776267/bobosen.pdfIn PDF document text
    • http://files.shbshowpigs.com/uploads/1/3/0/8/130874332/mefapumes.pdfIn PDF document text
    • http://tikabomo.claybypat.com/uploads/1/3/1/4/131453540/fff60485.pdfIn PDF document text
    • http://files.seniorservicesofswfl.com/uploads/1/3/0/7/130775431/1023744.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/1/0432/5670/9288/files/tezobimapazewin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/31543944611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4700/0983/files/berobevigaxozede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17232613021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1161/9491/files/jawowaziwivapotif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4079/8885/files/abamectin_insecticide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8717/4557/files/zunupubababudelikejop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5797/0328/files/97858303801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9839/1196/files/54300271633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9875/7538/files/83505672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/minecraft_alpha_texture_pack.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
🗂 Part of campaign: seniorservicesofswfl.com 4 samples

Related samples 3

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_off00004f77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F77 5220 bytes
SHA-256: 86a17395612cb998109c84733b43cb0a995d82e485269f163ffb2cf4e8d562f1
font_01_sfnt_off0000611f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611F 9448 bytes
SHA-256: bdd4348cf4e8caeb4ec2f48cd14c1fb30c43cbc5ed8135fdb8607c27bad0fc9a

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