Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b90720c7c45274c…

MALICIOUS

PDF

42.5 KB Created: 2020-08-25 14:44:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a40955641e49ab4092a1cd833c969f6 SHA-1: 585e7ef60ac967f534b45ff551fb404f94576788 SHA-256: 1b90720c7c45274c0c418448ae29e981efa22841000b1ea5bba051731a0d9c16
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding a large number of external PDF links, many hosted on Shopify. The primary malicious URL identified is https://ttraff.cc/pify?keyword=carte+canal+du+midi+pdf, which likely serves as a gateway to further malicious content or phishing attempts.

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.cc/pify?keyword=carte+canal+du+midi+pdf
    • http://files.parameciumparlor.com/uploads/1/3/0/7/130774990/3506c6c83.pdf
    • http://files.wimbornealliance.com/uploads/1/3/1/3/131384284/maxujunen.pdf
    • https://cdn.shopify.com/s/files/1/0439/9228/5342/files/fluoro_guided_hip_injection_technique.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2191/files/labaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/gupegedoguru.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/inorganic_chemistry_chemical_bonding.pdf
    • https://cdn.shopify.com/s/files/1/0429/3980/9959/files/85100708018.pdf
    • https://cdn.shopify.com/s/files/1/0435/3936/6047/files/varicella_zoster_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0437/7631/1453/files/peregizudegabemimukeze.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/cqc_report_bebington_care_home.pdf
    • https://cdn.shopify.com/s/files/1/0431/5286/7477/files/mupop.pdf
    • https://cdn.shopify.com/s/files/1/0431/5647/1970/files/wizard101_sylvia_spitfire.pdf
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/zimafewojugofa.pdf
    • https://cdn.shopify.com/s/files/1/0439/0594/1672/files/10875070806.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_off000068f9.bin
f39a155f7824b464a6969e2f45b3d335af017ab7668639b5a15e38c2ae640d6e
pdf-font-stream PDF embedded font (sfnt) at offset 0x68F9 5028 bytes
font_01_sfnt_off000079fb.bin
237b18227fbfe918ce823eb74ca5760f7d1974ebb18cf35d3d91a6828a7d07ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x79FB 10420 bytes