Malicious PDF — malware analysis report

Static analysis result for SHA-256 6325132880652ae5…

MALICIOUS

PDF

47.9 KB Created: 2020-08-22 16:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 838afb455ca55c20622bf962b4049929 SHA-1: fab9eb36e53f3134464add57afed7942460aa341 SHA-256: 6325132880652ae58c857361274443e600c2559ba5b3a592ea5be2eac28c70d5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text fragments that appear to be lures, including a movie title and references to supply chain management, likely to disguise the malicious intent. The presence of a link farm suggests an attempt to generate traffic or SEO manipulation, ultimately leading to the malicious URL.

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=yamla+pagla+deewana+2+movie+full
    • http://ledede.theboppsbling.com/uploads/1/3/0/7/130739349/palatugapawug-vaxobovunoresaw-poletomek.pdf
    • http://files.colmontessori.com/uploads/1/3/0/7/130740138/zojazo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/supply_chain_management_and_logistics.pdf
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/ludatedinawurazi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/571475918.pdf
    • https://cdn.shopify.com/s/files/1/0436/8538/0246/files/design_symbol_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/0594/3701/files/good_old_days_quiz_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0449/8921/8984/files/soxusafidom.pdf
    • https://cdn.shopify.com/s/files/1/0438/3227/9200/files/xizimadotegasowe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13002849425.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8986/files/church_quarterly_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/7298/6015/files/potipositotapupexekego.pdf
    • https://cdn.shopify.com/s/files/1/0432/4950/0315/files/evaluating_algebraic_expressions_worksheet_grade_7.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000678a.bin
926b6f593b0f5dc4455a5decfb3d720748211937e2a496c346efd4a35bacb31c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x678A 5332 bytes
font_01_sfnt_off000079c3.bin
f58f5fb430318f8982ffd6eee33ba0ae99542010619ddb5df7f91f4f30e48114		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C3 10348 bytes
font_02_sfnt_off00009d67.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D67 16164 bytes

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