Malicious PDF — malware analysis report

Static analysis result for SHA-256 007e6981c6934f9f…

MALICIOUS

PDF

52.2 KB Created: 2020-08-18 15:17:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59411d6d5b59ba35258776960482d4fc SHA-1: 71374a598a783f44a3def4df3a5e0dc3beb907e1 SHA-256: 007e6981c6934f9f8ff6e0667775b014f19e50093efe379da5002c8c2404579d
154 Risk Score

Malware Insights

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

The PDF document was identified as malicious due to its extensive use of embedded links, many of which point to redirector infrastructure. The document body, though partially obfuscated, contains text related to 'latest android smartphones under 50000' and includes a URL that leads to a malicious redirector. This suggests a phishing or scam attempt designed to lure users to malicious sites.

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.cc/pify?keyword=latest+android+smartphones+under+50000
    • http://lawujixu.poetryjockeys.nl/uploads/1/3/2/8/132815154/wafelejabagik-danibepupoz-litazak-waxomoluvewi.pdf
    • http://files.salon2000.co.uk/uploads/1/3/1/6/131637104/b6868.pdf
    • http://files.colonialbaptistbradenton.com/uploads/1/3/1/4/131438111/tudupezuwaf_sapad_pelen.pdf
    • http://files.apogeepsychologicalservices.com/uploads/1/3/1/4/131437930/4101195.pdf
    • http://files.brokenbowtravel.com/uploads/1/3/0/8/130814858/987108.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/6638/2746/files/69284578474.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/collins_grammar_for_ielts_vk.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/how_to_grow_melons_in_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/52732878809.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/86957091224.pdf
    • https://cdn.shopify.com/s/files/1/0432/3567/2219/files/xaterafakilezuwude.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4301/files/53355796077.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/21621434203.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_off00006a5f.bin
cf2d179465cff91c2bfc0dc310c689baa249b2e3d0c840eea568c49102e3ce02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5F 5256 bytes
font_01_sfnt_off00007c0a.bin
e5598f7f4a0d33cc02d0ff62d4dd63e16524869a66b9f685260cc8af029f6204		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0A 10316 bytes
font_02_sfnt_off00009fa7.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FA7 16164 bytes
font_03_sfnt_off0000b4be.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4BE 4324 bytes

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