Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d4a45045315f7c…

MALICIOUS

PDF

41.5 KB Created: 2020-08-28 17:49:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1aacbca2548a5ad8d9c0ddb78acfa8c5 SHA-1: 70761190533282af3c621d6526a0db4b3e39dbaf SHA-256: b0d4a45045315f7cf81a18501119b30f97d9b54ac3d31edb81eefdc1f18b22b0
152 Risk Score

Malware Insights

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

The PDF contains a prominent link that, when clicked, redirects to a known malicious domain (ttraff.com) disguised as a movie download lure. The document body, though partially corrupted, contains text related to the movie and the malicious URL. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the malicious nature of the embedded link, and the ML classifier strongly indicates maliciousness.

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=teenage+mutant+ninja+turtles+2+full+movie+download+in+hindi
    • http://bukuruw.desotoyou.com/uploads/1/3/2/6/132681337/ca21c6.pdf
    • http://files.brookekellyband.com/uploads/1/3/1/8/131871785/7441294.pdf
    • http://kuwojifo.thewhistlepunk.com/uploads/1/3/2/3/132302936/9779466.pdf
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/zejalanokejelanilaru.pdf
    • https://cdn.shopify.com/s/files/1/0447/8559/8615/files/corpus_linguistics_an_introduction_tony_mcenery.pdf
    • https://cdn.shopify.com/s/files/1/0432/1515/9458/files/majnu_old_naa_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/7104/3739/files/introduction_to_food_safety_and_hygiene.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/antenatal_exercise_in_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4399/files/24341404294.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7238/files/patient_consent_form_for_case_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/visual_basic_net_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6733015585.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2821/files/pupiwixo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0813/8150/files/48605032172.pdf
    • https://cdn.shopify.com/s/files/1/0449/5595/9464/files/how_to_use_ammeter_and_voltmeter.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1522/files/switch_statement_javascript.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062cc.bin
2abac159fdae46f0d723318ab5a7c80a4b7d190a89eac5be1d03fb6515561507		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62CC 5628 bytes
font_01_sfnt_off000075de.bin
0949cef6f8c94058c280ec93388dbd2b277775eb4cb72968a68ca652b6796d97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75DE 10120 bytes

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