Malicious PDF — malware analysis report

Static analysis result for SHA-256 616e3eae545d1e3f…

MALICIOUS

PDF

46.1 KB Created: 2020-07-28 18:04:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ee577180243c963ca2f65777cffdef7 SHA-1: e7e06f62b03339593f92fbe6d90999ecd5384e40 SHA-256: 616e3eae545d1e3f01b26a537eec897d278c4a120e723e7fc4d6c2d9cf0fc097
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a redirector service, which is a common tactic for distributing malware or phishing pages. The document body, though corrupted, suggests a lure related to 'Plague Inc evolved android full', aiming to entice clicks. The presence of numerous external PDF links, many pointing to Shopify, indicates a link farm used to boost search engine rankings 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=plague+inc+evolved+android+full
    • http://files.massagebyaxil.com/uploads/1/3/1/3/131398110/tadupipowum.pdf
    • http://files.anvilandlacefarm.com/uploads/1/3/0/7/130738996/buvorodukilovixaxale.pdf
    • http://files.charlottebiltekoff.com/uploads/1/3/2/6/132683142/lorafexejulujoj_boginu.pdf
    • http://files.kmphotographyma.com/uploads/1/3/1/4/131407165/1126974.pdf
    • http://files.realisticwingtutorial.com/uploads/1/3/1/8/131856270/b8ece7352.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/7244/4823/files/38798045460.pdf
    • https://cdn.shopify.com/s/files/1/0430/2438/4154/files/85228681762.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16946396068.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8701/files/vogupiwozuwubovibemipovog.pdf
    • https://cdn.shopify.com/s/files/1/0431/7616/5536/files/73624498001.pdf
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/xenugifuvugonolivero.pdf
    • https://cdn.shopify.com/s/files/1/0440/9776/5528/files/ronekibenowaruli.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/kazofuzopafozodobowi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6946/4991/files/videgowur.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/palilevunukij.pdf
    • https://cdn.shopify.com/s/files/1/0432/6562/2184/files/84158220030.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/lipotufubarotopuz.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_off0000789b.bin
ef5cec7edd86c37a20d436a5b393368cc5e12d02e6af6311e4f886c29064b274		 pdf-font-stream PDF embedded font (sfnt) at offset 0x789B 4876 bytes
font_01_sfnt_off00008936.bin
c2ad45d3a5067a6ff50e4cf19866023f0f9cf8778313ebbdcf5eba691a7f14f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8936 9944 bytes

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