Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5d7b74947c0451b…

MALICIOUS

PDF

35.8 KB Created: 2020-08-02 10:16:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0aa9d369eae5cc9122930728ded3fd0d SHA-1: 7782ec8d809e659d0dd36876c3d1615c1500aba7 SHA-256: e5d7b74947c0451b5416ceb41e62f2c039280beec4cbe0931b853adab7a47aa5
152 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 ttraff.com. The document body, though heavily obfuscated, contains text referencing a 'Frigidaire washing machine manual' and the malicious URL, suggesting a lure to trick users into clicking the malicious link. The presence of a large number of external PDF links also indicates a link farm, likely for SEO poisoning or to obscure the final malicious destination.

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=frigidaire+washing+machine+manual
    • http://files.wroughtbylight.com/uploads/1/3/0/8/130874361/49c771e9a4.pdf
    • http://files.humactive-formation.com/uploads/1/3/0/8/130814411/668912.pdf
    • http://files.theblakeneybreezes.com/uploads/1/3/1/6/131637876/fikatu.pdf
    • http://files.7lakesboatrentals.com/uploads/1/3/1/3/131384169/goguboxibiju.pdf
    • http://files.frcteam2881.com/uploads/1/3/1/8/131856046/a096532621e31.pdf
    • https://cdn.shopify.com/s/files/1/0438/2018/7805/files/ranixafedaxunane.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/86104769261.pdf
    • https://cdn.shopify.com/s/files/1/0431/9795/6256/files/kirulomefibemez.pdf
    • https://cdn.shopify.com/s/files/1/0437/8152/1560/files/77125669259.pdf
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/pazusebeneb.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69865881622.pdf
    • https://cdn.shopify.com/s/files/1/0434/7317/4680/files/66176086725.pdf
    • https://cdn.shopify.com/s/files/1/0434/8461/0712/files/91682628448.pdf
    • https://cdn.shopify.com/s/files/1/0434/5797/0328/files/pagitefegopukinasubiko.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/negukaninodajenigak.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dogudanivivakow.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/65590980871.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_off00004e0b.bin
ed71eefd74fbd36496b3c9dd0fd182cd2ebd80e1a634b20a1cd87f9a719f3313		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E0B 5400 bytes
font_01_sfnt_off00006055.bin
b89d71a2d8333a50859d7747986d753fb35d141a9adcd14124be16c9636c343f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6055 9900 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.