Malicious PDF — malware analysis report

Static analysis result for SHA-256 6256f2c882fc35c7…

MALICIOUS

PDF

44.4 KB Created: 2020-08-24 16:20:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 342a4e7147ed9ba48a133bd9e0ea6788 SHA-1: 2cac088dc6406836124bce394f99f9305205cb7e SHA-256: 6256f2c882fc35c7ed9e3773c8e3c49daf4bdac4ba2a1fb4366a6734acf0e72c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which are SEO-themed and redirect to malicious infrastructure, as indicated by the PDF_SEO_LINK_FARM and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The document body text, though heavily obfuscated, contains the string "Cloudformation lambda function template" and a URL pointing to a malicious redirector, suggesting a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

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=cloudformation+lambda+function+template In PDF document text
    • http://files.luisaluisa.com/uploads/1/3/1/8/131856191/5741675.pdfIn PDF document text
    • http://boxid.beaurobertspianist.com/uploads/1/3/0/9/130969077/3687280.pdfIn PDF document text
    • http://jatowi.malliefe2o3.com/uploads/1/3/1/4/131437615/8725480.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/1/0433/0936/7454/files/movimiento_rectilineo_uniformemente_acelerado_definicion_fisica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5560/4124/files/somegobugipifes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0456/8422/8255/files/guide_specification_for_seismic_isolation_design_aashto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/7179/0245/files/wulupesakenipexobawava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/lixusananuvofedepowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2557/files/keronevodumetojovakal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4349/9677/files/arabic_writing_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7764/1116/files/what_is_a_saddle_point.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/anjali_dj_song_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9610/5375/files/gemonuwamejaxirekemowole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8168/5406/files/suropiren.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19941062624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4647/5678/files/13112989739.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 2

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_off000068ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68AE 5168 bytes
SHA-256: e21e654de8353ebd5f18928905ab1fd560a1c593b964f920bd4116e67ce7c483
font_01_sfnt_off00007a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A24 13156 bytes
SHA-256: 83661e441509da0f71b753441fb5147432dc552449bf7c49787639a331d6b792

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