Malicious PDF — malware analysis report

Static analysis result for SHA-256 6201e7379c471e34…

MALICIOUS

PDF

40.9 KB Created: 2020-08-24 04:13:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cebafa4a1663832024b2fac1fbfe9d9 SHA-1: 49e5db1052a198bab0c00ae734c1ffd6fb442309 SHA-256: 6201e7379c471e3441a353edf44197165caa638f1f22fbb90287bc6fef1b28d7
162 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'address labels' and the malicious URL, suggesting a lure to trick users into clicking malicious links. The presence of many external links, including the malicious one, indicates a link farm or redirection strategy to distribute malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=address+labels+for+wedding+invitations+templates
    • http://files.whatkriscooks.com/uploads/1/3/1/4/131437832/nubekujom.pdf
    • http://kafozuki.beebellaphotography.net/uploads/1/3/1/4/131407178/susozilab.pdf
    • http://xokumeme.studentredaksjonen.com/uploads/1/3/2/6/132680937/dexov-kujugokigu-tudogebijop-xozunarep.pdf
    • http://files.christiephotography.net/uploads/1/3/2/3/132303270/6601566.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/autobiography_of_a_yogi_in_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0462/3899/0485/files/manual_cetesb_de_gerenciamento_de_reas_contaminadas.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8697/files/nexuratimusiju.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/bulletin_de_paie_explication_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/8267/0485/files/nelson_algren_a_walk_on_the_wild_side.pdf
    • https://cdn.shopify.com/s/files/1/0434/6111/6064/files/andaman_and_nicobar_island_map.pdf
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/cambridge_pet_writing_part_1_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/8366/9412/files/26961309823.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/keras_policy_gradient.pdf
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/saveraza.pdf
    • https://cdn.shopify.com/s/files/1/0430/5911/8229/files/73616055129.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9384/files/socialism_communism_and_capitalism.pdf
    • https://cdn.shopify.com/s/files/1/0433/3984/1695/files/66156728378.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_off0000603d.bin
3a03342c197e3f3eaf21c7855351a6ae1f00e0053419d171ceeb541cc528b77a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603D 5644 bytes
font_01_sfnt_off00007369.bin
6f22e712e18d05a20933d467854d617e75d3452a7adcbbc2b9bbfcbfa3571c5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7369 10204 bytes

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