Malicious PDF — malware analysis report

Static analysis result for SHA-256 304f133969178886…

MALICIOUS

PDF

39.3 KB Created: 2020-08-14 06:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7578680dc4a415c401ee2f4b56b521e SHA-1: 62d2ee61bdde29368172926d1dc7ed026c9140f1 SHA-256: 304f133969178886f58c853ebf30182209d0d42835a7cd85cc047ac8d36b80af
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating a link to a known malicious redirector, ttraff.com. Additionally, it features a PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest a redirection chain designed to lead the user to a 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=girl+guides+uniform+trinidad
    • http://files.craigaprice.com/uploads/1/3/0/9/130969633/perem.pdf
    • http://files.tricountypullersinc.com/uploads/1/3/2/6/132696249/e0f81288.pdf
    • http://files.monicasonthestrip.com/uploads/1/3/0/8/130813489/dixusi.pdf
    • http://files.skcny.org/uploads/1/3/1/4/131437699/sogavemoloxofupuze.pdf
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/67433889467.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/wujogazizepodelonudu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38608120386.pdf
    • https://cdn.shopify.com/s/files/1/0433/6241/8837/files/migemegoja.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/72965406635.pdf
    • https://cdn.shopify.com/s/files/1/0445/8987/5364/files/plant_and_animal_cell_foldable_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/womidesavilutodesivaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/acupuncture_treatment_points_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/au_bonheur_des_dames_texte.pdf
    • https://cdn.shopify.com/s/files/1/0434/3513/1046/files/82691061704.pdf
    • https://cdn.shopify.com/s/files/1/0435/5247/3252/files/8309094613.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_off000059f9.bin
45bc6cc030b87cc2e493b3b1c27c13e5913c840c52510bc46d01ca1e612a1409
pdf-font-stream PDF embedded font (sfnt) at offset 0x59F9 5260 bytes
font_01_sfnt_off00006bbf.bin
34516068458d66a1bfe9df6f76aba5a8d15617ada571de4b035815dcd252f400
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBF 10748 bytes