Malicious PDF — malware analysis report

Static analysis result for SHA-256 560370d5417c4c91…

MALICIOUS

PDF

38.9 KB Created: 2020-08-26 10:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce4e4ec1d037c58753e57ab306c2a08a SHA-1: fcfcb5de85381032bcd0442ad47913bac63a3778 SHA-256: 560370d5417c4c91ddd9b2a7adcdffccdbe2c3ee48dba901af23c5e0de1d99ba
152 Risk Score

Malware Insights

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

The PDF contains a link farm, with multiple embedded URLs, one of which points to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The primary malicious URL is ttraff.com, which is used to redirect users to other sites, likely for further exploitation or phishing.

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=damage+types+dnd+5e
    • http://files.greaterlifeheritage.com/uploads/1/3/0/7/130776083/pugujakil-pirusafona-robejadi.pdf
    • http://files.epiphyte-creations.com.au/uploads/1/3/2/7/132710603/811801.pdf
    • http://files.lifechoiceprc.com/uploads/1/3/2/7/132741339/3147753.pdf
    • https://cdn.shopify.com/s/files/1/0457/4127/7340/files/68608735032.pdf
    • https://cdn.shopify.com/s/files/1/0432/1283/2931/files/70827462452.pdf
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/age_of_adaline_full_movie_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/reglement_interieur_assemblee_nationale_rdc.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72890356131.pdf
    • https://cdn.shopify.com/s/files/1/0439/5103/0430/files/99096222882.pdf
    • https://cdn.shopify.com/s/files/1/0435/5280/0929/files/cross_laminated_timber_design_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/7889/3214/files/cisco_asa_firepower_threat_defense_datasheet.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_off00005c51.bin
a935d5b95a61e0b0773cdad7015804c3b4ca48b73302fff697a7d77d6b0f4c71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C51 5376 bytes
font_01_sfnt_off00006e97.bin
24e0d1356e123459c9523a14074d6be713858b149ba9a73c04ae4a3ff4019ccc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E97 9548 bytes

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