Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b5c197b0bc79672…

MALICIOUS

PDF

48.0 KB Created: 2020-08-17 17:11:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fefcb503214ac2e6139de8f91eb4081e SHA-1: 87f768bf0be4f5f1f49c4c0bd95908ea3009e067 SHA-256: 2b5c197b0bc7967225d10c1e615c0a1822ae38fa0857fd51c344c5a8bd82986f
202 Risk Score

Malware Insights

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

The PDF file contains a link farm with numerous external links, including one pointing to a known malicious redirector. The document body also contains a call-to-action phrase, suggesting a lure to trick the user into clicking the malicious link. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.cc/pify?keyword=timeline+slide+template+free In PDF document text
    • http://rusikigas.figgel.com/uploads/1/3/0/7/130740537/4762789.pdfIn PDF document text
    • http://files.elmswellkarate.com/uploads/1/3/0/7/130739060/1290304.pdfIn PDF document text
    • http://files.purpleinkpublishing.com/uploads/1/3/1/4/131437844/mikofoxaxomojope.pdfIn PDF document text
    • http://files.portugesestonethenaturalpath.com/uploads/1/3/2/6/132682778/nubipu.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/1/0437/0956/3045/files/manualidades_con_madera_clavos_e_hilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2038/1342/files/apc_smart_ups_c1000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/72578600709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/nusitobobojuwalazoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3826/8830/files/jurnal_diare_pada_bayi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0832/6813/files/wosoribulekekefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/44759747141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/11987648716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/fuxusokifinaputogepuzodo.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_off00007573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7573 5136 bytes
SHA-256: fd01718fdf1cd7b5987089d5838ec92a3a4570fa58ab3a587c8bf3aae422a542
font_01_sfnt_off000086c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C5 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00008f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F53 10280 bytes
SHA-256: 7bf2dbb49cdc12e11426c42e7c48f2014802cbf0c6732b039b3289c001ef89df

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