Malicious PDF — malware analysis report

Static analysis result for SHA-256 098ca22358a5d380…

MALICIOUS

PDF

36.2 KB Created: 2020-09-16 19:36:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 026f053492b445211d79c1ee55e486f1 SHA-1: 3f1f4daf627b832d8e367eefb0365e82674f8181 SHA-256: 098ca22358a5d3808bd8bb3f0481e8d53bc585fe3be125e583674ff9ccf038ff
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One of the primary links, 'https://ttraff.club/wix?keyword=stickman+badminton+unblocked+2', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF links, reinforcing the lure. The presence of a malicious redirector and the sheer volume of links indicate an attempt to drive traffic to potentially harmful 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.club/wix?keyword=stickman+badminton+unblocked+2
    • http://files.betsyathorpe.com/uploads/1/3/0/7/130775102/vowawojebonum.pdf
    • http://files.d-aleksandar.com/uploads/1/3/1/4/131411539/fotez-vowaresolu-bipaworebo-rejedo.pdf
    • http://dijokix.nhvfd18.org/uploads/1/3/0/7/130739595/pewukewuxenamuv_tiwad_tuwudoguzolol_mopab.pdf
    • http://files.rearwindowphotography.com/uploads/1/3/1/8/131856567/pevafutajuzo_xivojogaba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/3290/1789/files/neoclassical_economics_theory.pdf
    • https://cdn.shopify.com/s/files/1/0431/0505/8976/files/xiwafimutububigolekowob.pdf
    • https://cdn.shopify.com/s/files/1/0437/2201/4870/files/jesibazepuxejokovuroxeve.pdf
    • https://cdn.shopify.com/s/files/1/0428/7807/5036/files/nizitipofot.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/50640046147.pdf
    • https://cdn.shopify.com/s/files/1/0437/7686/8514/files/52244038113.pdf
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/66718918534.pdf
    • https://cdn.shopify.com/s/files/1/0435/0525/4566/files/luwefukide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/pugasefopu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1369/1799/files/alif_laila_part_1.pdf
    • https://cdn.shopify.com/s/files/1/0433/9374/5046/files/smurfs_village_apk_hack_free_download.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_off00004fc1.bin
ef1cc0f1095ee37c226ab8999e794762084a7734928b1348248231fd0974d4e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC1 5252 bytes
font_01_sfnt_off00006191.bin
47bddc3b9169cb9c82d177e4dc7724b88d966a4765bc5bc5982587711acf6a88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6191 10072 bytes

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