Malicious PDF — malware analysis report

Static analysis result for SHA-256 7717cf169d80510d…

MALICIOUS

PDF

50.3 KB Created: 2020-08-12 04:33:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bcc51949a497f1ace79e8acec9372509 SHA-1: 846e041b90176d825c82bf99d19a2ceaf2bb781e SHA-256: 7717cf169d80510d90058e6f399585ab8d2bf14a7059b20df2e379c36f67d4a2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which are designed to appear as legitimate document downloads but redirect to a known malicious domain, ttraff.com. This suggests a phishing or scam attempt, likely delivered as a spearphishing attachment. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=artificial+intelligence+pdf
    • http://files.finksdeli.org/uploads/1/3/2/7/132741222/5b0259.pdf
    • http://zijokuk.turtlebee.co.uk/uploads/1/3/1/0/131070792/samovug-juzuworer-gumote-tidolamuv.pdf
    • http://xinifuwo.leadingyouhome.org/uploads/1/3/0/9/130969204/roxoxofez.pdf
    • http://files.lovehomeandgardenmakeovers.co.uk/uploads/1/3/2/7/132710491/rodufiwitesi-rolonarugos-neziz-fabirib.pdf
    • http://toxidal.gcndesign.com/uploads/1/3/0/7/130775432/takozudadole.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/4090/6143/files/design_of_wood_structures_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/barefoot_investor_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/37205068838.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5715/files/xapasekerunaxanugub.pdf
    • https://cdn.shopify.com/s/files/1/0428/8253/1481/files/newimajafusoduru.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/23446942544.pdf
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/mekaforamurano.pdf
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/clicker_heroes_gold_cheat.pdf
    • https://cdn.shopify.com/s/files/1/0427/5719/3895/files/boganasumubus.pdf
    • https://cdn.shopify.com/s/files/1/0444/4015/8374/files/google_dork_filetype.pdf
    • https://cdn.shopify.com/s/files/1/0436/0467/2675/files/dopetofafuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1171/files/donapowofubeve.pdf
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/60772126164.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008620.bin
c828a0ddb69b21bf123c1686219cb7901ee4a8d9300cf804ed65d3f0dfa691df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8620 5136 bytes
font_01_sfnt_off0000979c.bin
477863887b0e5ecce2046ac592526137b00b2bc90c24b455119f7e74b7b617a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x979C 10572 bytes

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