Malicious PDF — malware analysis report

Static analysis result for SHA-256 0adc2e2897ec5075…

MALICIOUS

PDF

46.6 KB Created: 2020-08-22 17:14:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2494bcaa4e12a7a1063904124674f6e SHA-1: c9a4d42c1f5b54bc123878ab23eb3eaba174f6f4 SHA-256: 0adc2e2897ec5075df5847cd328e8fd286f75bbba0d71d35c4955dc016697a15
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Bluefin tuna fishing reports' and a URL that matches the malicious redirector. This suggests a phishing or scam attempt designed to lead users to malicious infrastructure.

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.ru/pify?keyword=bluefin+tuna+fishing+reports+north+carolina
    • http://tagutod.gdnatoronto.org/uploads/1/3/2/7/132710575/e13937d2.pdf
    • http://files.wealthbeyondwords.org/uploads/1/3/1/0/131070481/5545297.pdf
    • http://vizozud.jclarkgardner.com/uploads/1/3/2/6/132681670/5172079.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/2348/2535/files/44323975755.pdf
    • https://cdn.shopify.com/s/files/1/0440/2338/2166/files/free_brand_guidelines_template_indesign.pdf
    • https://cdn.shopify.com/s/files/1/0435/5201/4491/files/29172068510.pdf
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/dykem_cross_check_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0438/1537/0912/files/3288683709.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sotuxinonuwirumedubisaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/zutudiselodanewezekiwuxew.pdf
    • https://cdn.shopify.com/s/files/1/0433/3774/4552/files/xipanikiwozixigomadawu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8845/3533/files/xuguz.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/43748689561.pdf
    • https://cdn.shopify.com/s/files/1/0431/5535/7858/files/falumevumevedobukaxosa.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/48147685264.pdf
    • https://cdn.shopify.com/s/files/1/0433/9066/4860/files/69069659739.pdf
    • https://cdn.shopify.com/s/files/1/0436/9947/0490/files/17068417311.pdf
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/tapevetodame.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_off000078af.bin
9f9013ae7ad202012cf3b963a32c2dc704f348ff43b4fe680f06723132c780fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78AF 5324 bytes
font_01_sfnt_off00008ac5.bin
40ae2cd42a6097b0b81e31e2990ccee7ae793a69bf51cfe6b9842452d4edf267		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC5 10008 bytes

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