Malicious PDF — malware analysis report

Static analysis result for SHA-256 07fc895b7dc4b8ed…

MALICIOUS

PDF

42.1 KB Created: 2020-08-11 22:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57e9de21c2a68368bf5c77bd448abc28 SHA-1: 6aaebf56bb2696619302263433ed92aab54670f5 SHA-256: 07fc895b7dc4b8ed4a370d85b64d7f77b9fd8ddb595b03bfc8bc439b8358e13d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to appear as a free download for a popular book, but it redirects to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=david+goggins+can+t+hurt+me+free+pdf+download. This technique is often used to distribute malware or phish for credentials.

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=david+goggins+can+t+hurt+me+free+pdf+download
    • http://files.backinactionchiropractic.com/uploads/1/3/0/7/130776253/58a8c8c4d7c1c52.pdf
    • http://kuxajam.fuquafitnessadventures.com/uploads/1/3/0/7/130775519/bukomamar_mixigetedepedax_wusovoxo.pdf
    • http://sezozuw.sbrfln.com/uploads/1/3/2/8/132814930/9683960.pdf
    • http://files.louisvilleeatlab.com/uploads/1/3/0/9/130969424/6a607062906c.pdf
    • http://files.ultimatesyntheticlubes.com/uploads/1/3/1/4/131437139/narit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/0480/3746/files/wezobobejorubik.pdf
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/marxist_criticism_in_literature.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovovowegafakaroseras.pdf
    • https://cdn.shopify.com/s/files/1/0437/6595/6759/files/sejarah_belanda_masuk_ke_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/fetuvazazapuge.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/lewoxajivekepepu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dagezaluvonanapukinuwit.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3656/files/67509553968.pdf
    • https://cdn.shopify.com/s/files/1/0434/7537/0136/files/luweradomumotag.pdf
    • https://cdn.shopify.com/s/files/1/0435/3789/1477/files/oath_of_vengeance_paladin.pdf
    • https://cdn.shopify.com/s/files/1/0428/1748/7011/files/28767952964.pdf
    • https://cdn.shopify.com/s/files/1/0434/9798/0056/files/bodaworetuvelakarafotuwuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.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_off000064b0.bin
dbc7acaf4d6f70199f3efbcd8fcd08ac69347e9127fffee3e8db0a627d4cae33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B0 5720 bytes
font_01_sfnt_off00007818.bin
544109e4d51800ca3a0f036772f8badf49fdd3834a4ed9ff217b1e19200352b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7818 10324 bytes

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