Malicious PDF — malware analysis report

Static analysis result for SHA-256 d64b5f45adb40d2c…

MALICIOUS

PDF

42.2 KB Created: 2020-08-31 05:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23fd447aa762ea45a263f72cb66b6052 SHA-1: a434364f3e78e020db054fb1f60461c3fabbdf4c SHA-256: d64b5f45adb40d2ca224c20d2d3bf47f61bcbac21b79caba51b74f22ec50225a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to a malicious site. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm or SEO poisoning attempt to increase visibility of the malicious content. No scripts were extracted, and the PDF structure itself does not indicate further malicious actions beyond the redirection.

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.cc/wix?keyword=tame+impala+let+it+happen+piano+shee
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/vesinozemogukabu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2025/4375/files/likukowin.pdf
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/invitation_cards_for_christmas_party_templates.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6636/files/lojima.pdf
    • https://cdn.shopify.com/s/files/1/0431/6689/2191/files/kutalidusuvobujatosexi.pdf
    • https://static.usrfiles.com/ugd/b8c837_27e5746e514149d78c5df84dd31daff6.pdf
    • https://static.usrfiles.com/ugd/96768c_ffcbe8c847be4efb8dee408bb33e30be.pdf
    • https://static.usrfiles.com/ugd/f523c3_064815a10cb84da9a4e77f17a4ddb8e4.pdf
    • https://static.usrfiles.com/ugd/4f270c_bb600599d6d342ad8761ad11392fb5b6.pdf
    • https://cdn.shopify.com/s/files/1/0433/7146/2814/files/surgical_guide_for_crown_lengthening.pdf
    • https://cdn.shopify.com/s/files/1/0431/3455/0173/files/98535044066.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5447/files/propaganda_techniques_quiz_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8821/files/19675815433.pdf
    • https://cdn.shopify.com/s/files/1/0446/6583/1577/files/vacuum_die_casting_process.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.pdf
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/27177154082.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057d1.bin
e91ae1d9213140467bee358f491ff1f68e32eff290dc54e3a530c00a4da4466a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D1 4700 bytes
font_01_sfnt_off00006797.bin
25db948021522c200b656649b81dd810d9b2689814857dcf1f2c8c45b45a10bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6797 11932 bytes
font_02_sfnt_off00008dc7.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC7 4324 bytes

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