Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4506cc5ca657c0c…

MALICIOUS

PDF

48.9 KB Created: 2020-08-02 17:38:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b69355108f13dbea6a8a6fb47c1afaf1 SHA-1: bd08beb655cb8035345811ac48cc705a82049af5 SHA-256: b4506cc5ca657c0c62e6b69d319e2567cf32dfc6a2912d0a7675cce3c300e018
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is ttraff.cc, which is known for redirecting to malicious sites. The document body contains obfuscated text and a reference to the malicious URL, suggesting it's part of a lure to entice users to click the link. No scripts were extracted, but the PDF structure itself is weaponized to deliver a malicious payload via redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=mumbai+125+km+3d
    • http://files.armiesoftn.org/uploads/1/3/1/6/131606155/2d353ecf44.pdf
    • http://files.jubileecatholiccommunity.com/uploads/1/3/0/7/130738928/tileju_jenexepapine.pdf
    • http://files.nancylbruce.com/uploads/1/3/1/3/131382346/8787333.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/bidelijeboxofafijebopuzub.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/3092419455.pdf
    • https://cdn.shopify.com/s/files/1/0437/2217/8710/files/razodogudejutevuduxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9313/9364/files/66992146669.pdf
    • https://cdn.shopify.com/s/files/1/0431/0509/1745/files/8210146281.pdf
    • https://cdn.shopify.com/s/files/1/0432/2587/4600/files/75487483233.pdf
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/fowagiwikuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/9546/5892/files/baxumow.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/55193585295.pdf
    • https://cdn.shopify.com/s/files/1/0436/2131/8818/files/masofepilegireganakarojov.pdf
    • https://cdn.shopify.com/s/files/1/0429/2214/8003/files/gta_5_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/lujakufupivasujiroliseliw.pdf
    • https://cdn.shopify.com/s/files/1/0429/4885/3926/files/35310654204.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/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060aa.bin
32d763ffae33863a2772793da4813427b190731bb273ffed63097567212b4ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60AA 4816 bytes
font_01_sfnt_off0000710c.bin
c671aa55584b9800bfa0c1f1c772b11349e7a894c83f1b2328cd5a10e91a33ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x710C 9928 bytes
font_02_sfnt_off0000933a.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x933A 16164 bytes
font_03_sfnt_off0000a84f.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA84F 4324 bytes

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