Malicious PDF — malware analysis report

Static analysis result for SHA-256 701758d24a548c2a…

MALICIOUS

PDF

46.5 KB Created: 2020-08-06 18:09:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 228a2b0a235408fff047aab6558001f3 SHA-1: d305bf17202a0ce9f628eb5b552b3b95960b2aa3 SHA-256: 701758d24a548c2a94279853180789bfcdb5d2e169c62a2db9a7789e9a352024
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO abuse tactic. One critical heuristic indicates a link to a known malicious redirector at traff.com, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the URL that triggers this redirection, indicating a phishing or scam attempt.

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=grief+and+grieving+process+pdf
    • http://dipaf.bethelbaptistgso.com/uploads/1/3/1/4/131452922/70f726866.pdf
    • http://files.thefalconerfoundry.com/uploads/1/3/0/7/130775528/862583.pdf
    • http://surusu.emmaredmarchrose.com/uploads/1/3/2/7/132712358/104a0ef70e0d7e.pdf
    • http://files.mkayinthemountains.com/uploads/1/3/2/7/132740423/e0b6683ce6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/27158767905.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8892/files/rokakojif.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/wizuniga.pdf
    • https://cdn.shopify.com/s/files/1/0438/8824/6936/files/gomedozalokevowotofedok.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/7854135710.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9725/files/98387605006.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7618/files/gitotizoxibu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/sujitewokewam.pdf
    • https://cdn.shopify.com/s/files/1/0429/5032/8486/files/muxopab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32377204601.pdf
    • https://cdn.shopify.com/s/files/1/0434/5059/7528/files/python_round_decimal_places.pdf
    • https://cdn.shopify.com/s/files/1/0429/9387/7145/files/a_catholic_introduction_to_the_bible_the_new_testament.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_off000076fb.bin
99b079ad84de148cb78331849c9420cb518c1357f5373493d5f965bebf68d467		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76FB 5380 bytes
font_01_sfnt_off0000896a.bin
c2731058b0a8fe404ce0df294c24839bfc29e10434b4316441db618e8436b0ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x896A 10452 bytes

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