Malicious PDF — malware analysis report

Static analysis result for SHA-256 01358f873895d2fa…

MALICIOUS

PDF

44.7 KB Created: 2020-08-04 08:14:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85ec6b38eccdfe3439b5681e003768e4 SHA-1: caa8903c20a6cbda1b82782c527d1e7b38433269 SHA-256: 01358f873895d2fa9ccd1d8387aeb82c4ac4b717d88fcd43837fc5bf5a100e67
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was flagged by a machine learning classifier and contains numerous embedded links, including a critical finding of a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=lethal+autonomous+weapons+systems+pdf, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, also contains this URL, suggesting it's a core part of the lure.

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=lethal+autonomous+weapons+systems+pdf
    • http://files.german-teacher-online.com/uploads/1/3/0/7/130775808/nofazi_vulizaxajezuzuf_venawupili_gigaxopaluxa.pdf
    • http://files.myconfettiheart.com/uploads/1/3/1/3/131398541/0e707273b7e3ef6.pdf
    • http://wozivuke.thenexuschronicles.com/uploads/1/3/0/7/130740510/xiniderumisalud_nezijax_mojururid.pdf
    • http://files.triciazoellerauthor.com/uploads/1/3/1/4/131437615/4296521.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/3780/2146/files/sanefed.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuwofomakilaxenifotet.pdf
    • https://cdn.shopify.com/s/files/1/0429/7729/6543/files/85972537443.pdf
    • https://cdn.shopify.com/s/files/1/0433/8948/5221/files/87435766591.pdf
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/foxeburemikinemuluxipew.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1557/files/80801908208.pdf
    • https://cdn.shopify.com/s/files/1/0434/2140/1237/files/83041623279.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/39803333354.pdf
    • https://cdn.shopify.com/s/files/1/0434/5823/2473/files/dojapoxolevokabiwopi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0252/5856/files/gexovikijorodo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9017/3349/files/zenetukunonoberizelove.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/rakaso.pdf
    • https://cdn.shopify.com/s/files/1/0435/9458/0136/files/rotating_image_javascript.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_off00007222.bin
b8b84b2385fce14da7d02bf1a663499cb8fa7cd081e0821abd99d0aacb5388bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7222 5320 bytes
font_01_sfnt_off00008433.bin
d2b433dd934fa5108e820de5f17a42fc6107196b906a1e8dcfc78325bef7c0b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8433 9812 bytes

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