Malicious PDF — malware analysis report

Static analysis result for SHA-256 80f0d4626d0e38ef…

MALICIOUS

PDF

42.0 KB Created: 2020-08-08 22:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d014fdf0bfa04a342efe0f575f83690 SHA-1: 710c005c80952fe26a2ad4e148eb6461356a50d9 SHA-256: 80f0d4626d0e38ef9f0a531e025dde7f38086f918b592279dbb9670e978b3636
154 Risk Score

Malware Insights

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

The PDF contains a deceptive link presented as a free download for a PDF to Word converter. This link, `https://ttraff.ru/pify?keyword=pdf+to+word+converter+apk+free+download`, redirects to known malicious infrastructure, indicating a phishing or malware distribution attempt. The document also hosts a large number of links, many pointing to Shopify, likely for SEO manipulation to improve search engine ranking for malicious content.

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=pdf+to+word+converter+apk+free+download
    • http://files.naturallyyoursbyisabel.com/uploads/1/3/2/6/132695465/7234168.pdf
    • http://files.peakphotographyllc.com/uploads/1/3/2/8/132815318/223e811ee0b.pdf
    • http://ximebaw.massbailfund.org/uploads/1/3/1/4/131453494/mozegutokule.pdf
    • http://bedirewej.kaltydesigns.com/uploads/1/3/2/6/132682883/2241266.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/6454/1852/files/35392058501.pdf
    • https://cdn.shopify.com/s/files/1/0438/4922/0256/files/juzazoniduwuliwobifape.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/kadafudikodum.pdf
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/44011721093.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kufotiniponekurek.pdf
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/fazawibipareveseva.pdf
    • https://cdn.shopify.com/s/files/1/0433/2558/7609/files/61186580172.pdf
    • https://cdn.shopify.com/s/files/1/0428/7902/5318/files/5th_grade_math_mixed_word_problems_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0438/8939/3816/files/fifth_grade_math_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0437/4659/0872/files/definition_of_motivation_in_education.pdf
    • https://cdn.shopify.com/s/files/1/0432/1814/1347/files/51036147863.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/99361605740.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_off0000671a.bin
eb2562880f1f588e5773711197d85e962960642eecbd6f37a187f2428ccc1b70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671A 5188 bytes
font_01_sfnt_off000078f2.bin
7c90ab7cc8b30c69d2f03d3b9647df50279e995bcc81a1dc02035e4be1633552		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F2 9992 bytes

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