Malicious PDF — malware analysis report

Static analysis result for SHA-256 0186b2c2b2bea3a9…

MALICIOUS

PDF

45.3 KB Created: 2020-08-06 11:06:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fecf08af384d6fe8ca5594b22fee753 SHA-1: f5526ca7203e1c9b19c2f484820e123ab16ea721 SHA-256: 0186b2c2b2bea3a93e55c509807f389ac023aae348dbf68b4102174a77361452
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=affiliate+marketing+blueprint+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a mass external PDF link farm further indicates a malicious intent to distribute content or redirect users.

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=affiliate+marketing+blueprint+pdf
    • http://files.doublebassbridge.com/uploads/1/3/1/3/131379894/8006126094.pdf
    • http://files.vocalassociates.org/uploads/1/3/0/9/130969310/8780980859.pdf
    • http://files.ganeys.com/uploads/1/3/0/7/130776230/nugumirexe-wepot-nanuku.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0440/2829/7381/files/vapisomejunosagipixa.pdf
    • https://cdn.shopify.com/s/files/1/0439/1829/5195/files/biochemistry_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/movikulewerudazuxedo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/tojawarutofejugotapeje.pdf
    • https://cdn.shopify.com/s/files/1/0431/7066/0508/files/jurulebisupe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50398535586.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/lulejufawe.pdf
    • https://cdn.shopify.com/s/files/1/0437/6992/1688/files/38677990006.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84770620138.pdf
    • https://cdn.shopify.com/s/files/1/0432/8544/6822/files/agonismo_y_antagonismo_farmacologico.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/printable_shooting_targets.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/bulozigigazipekulaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/5802/6901/files/kezozoru.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000650c.bin
68dc6a0d44790fabbfabb39f586d84d0988bf89082912afbb3e5056c616fc263		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650C 5148 bytes
font_01_sfnt_off0000766b.bin
9159f7492bdd7a821435a819cca6e5805fffc1ac194a535346ddf2218ead9d92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x766B 10436 bytes
font_02_sfnt_off000099ff.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99FF 4324 bytes

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