Malicious PDF — malware analysis report

Static analysis result for SHA-256 69bbf377a0e44e03…

MALICIOUS

PDF

77.1 KB Created: 2020-08-08 03:16:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0d6537d7401afdae25b218f49e81d77 SHA-1: 3a6db8c606855c6f382adf73e8d128e97e82f76f SHA-256: 69bbf377a0e44e030041ebac443e36866d1b491e7c80cbd0afd73e4d635bd654
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Arjun award 2020 list pdf' and a URL that mirrors this, suggesting a lure. The presence of a malicious redirector indicates an attempt to deliver a secondary payload 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=arjun+award+2020+list+pdf
    • http://files.lunarlytez.com/uploads/1/3/1/6/131637374/lusamilemefofux-zakoxidunava-sifijone-kiziwizenoxew.pdf
    • http://files.maryhicksmetalarts.com/uploads/1/3/1/4/131408899/juvuzigoxatu.pdf
    • http://zadeda.ostrichhole.org/uploads/1/3/2/6/132681488/lawoganipufuwafo.pdf
    • http://files.alchemyharvests.com/uploads/1/3/2/6/132695582/4940393.pdf
    • http://bedagu.nmecfg.org/uploads/1/3/2/6/132683014/lirew.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/2890/6138/files/jagogukezosefujemivikuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/duwegat.pdf
    • https://cdn.shopify.com/s/files/1/0433/4721/4486/files/34181197597.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/69732527271.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/59276232723.pdf
    • https://cdn.shopify.com/s/files/1/0435/0210/8836/files/entrepreneur_quotes.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3208/files/88904892232.pdf
    • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/gimosekekadilutoxanix.pdf
    • https://cdn.shopify.com/s/files/1/0433/2932/3158/files/79951032403.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/rijiginadeletogoguguju.pdf
    • https://cdn.shopify.com/s/files/1/0432/9806/2501/files/asterix_and_obelix_bengali.pdf
    • https://cdn.shopify.com/s/files/1/0434/9358/9142/files/bekovuvakedudove.pdf
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/lesakesaxesidek.pdf
    • https://cdn.shopify.com/s/files/1/0428/0582/1599/files/39789244357.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3a7.bin
baf4e7fb88080ea7b5c08c3759e8d6691f97c9c758a0a726e2769dbdd082be89		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3A7 5120 bytes
font_01_sfnt_off0000d51a.bin
070e7fb061eb5e3ee4b9644047d568da3059e22fb0b9791a9768d0a4dedf3d4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD51A 14748 bytes
font_02_sfnt_off00010341.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10341 16164 bytes
font_03_sfnt_off00011858.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11858 4324 bytes

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