Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a3226221b00255b…

MALICIOUS

PDF

50.1 KB Created: 2020-08-05 09:30:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b2f9c01506b581c656e0a4b72c5f8dd SHA-1: 4ec7bc970f1a79640e4f296c95becddff1e13bf4 SHA-256: 5a3226221b00255bd45bcfcd5a8bc2571f7b4a42cb686b193a71939095123122
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains the target URL 'https://ttraff.com/pify?keyword=palmistry+pdf+in+bengali', suggesting a lure to a phishing or scam page. The presence of numerous other PDF links indicates a link farm strategy to improve search engine ranking for malicious content.

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.com/pify?keyword=palmistry+pdf+in+bengali
    • http://files.twentiesandconfused.com/uploads/1/3/1/8/131856757/83001.pdf
    • http://boluja.besureisofficial.com/uploads/1/3/1/3/131378776/fb1932f3e7.pdf
    • http://files.suewilliamsart.net/uploads/1/3/0/7/130739239/5402624.pdf
    • http://files.jmfenterprisesllc.com/uploads/1/3/1/6/131606169/wijoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/7027/4201/files/6762516143.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/98329520525.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/mixibodidodejabizat.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5763/files/pojotulutamosipo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/defegatojesugukekarajeki.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2892/files/60484773142.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74731072541.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/59001860363.pdf
    • https://cdn.shopify.com/s/files/1/0438/8726/3899/files/kozutusigojafabobif.pdf
    • https://cdn.shopify.com/s/files/1/0435/6574/4287/files/76395151112.pdf
    • https://cdn.shopify.com/s/files/1/0429/6504/1308/files/28475414914.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://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006071.bin
44df9079fb998448adfb9baa38e7b380c9e23fbb8a0b67101f7f92b1d72aacea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6071 5604 bytes
font_01_sfnt_off0000736a.bin
f73919dbe978a364196878fcc2d06b9ec677e96fd4e4d95401ee34247524cf3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736A 12080 bytes
font_02_sfnt_off000098e4.bin
3f36fec897c433570eb9ba865c9cb464e45b7bbefa80add2ca0b3067c5d8f293		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98E4 10036 bytes

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