Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f667bbd223aecf…

MALICIOUS

PDF

41.4 KB Created: 2020-08-25 10:26:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9dd5cebd4b413193651c5c73f4f0ffb SHA-1: fd107775349f53f7c66a77ca3809bbf6846c3026 SHA-256: 32f667bbd223aecfdf5f8b0d80fcf3044a064dcecf111402217808a3baed1655
152 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.cc/pify?keyword=south+carolina+alligator+hunting+guides', which is flagged as a malicious redirector. The presence of a link farm and a malicious redirector strongly suggests an attempt to direct users to harmful websites, likely for phishing or malware distribution.

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=south+carolina+alligator+hunting+guides
    • http://vaxavito.thesanctuarysource.com/uploads/1/3/1/4/131407089/563fb.pdf
    • http://files.fgofantasyphoto.com/uploads/1/3/0/7/130775677/zerakagudogefamuguv.pdf
    • https://cdn.shopify.com/s/files/1/0433/4016/9374/files/chemistry_gilbert_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/4872/2851/files/35076416626.pdf
    • https://cdn.shopify.com/s/files/1/0445/9633/0660/files/ozzy_osbourne_road_to_nowhere.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/pgcps_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0433/6461/4303/files/vitogenafavaninunixap.pdf
    • https://cdn.shopify.com/s/files/1/0431/2183/6193/files/ancient_china_timeline.pdf
    • https://cdn.shopify.com/s/files/1/0433/3967/7861/files/vikinugabe.pdf
    • https://cdn.shopify.com/s/files/1/0439/3874/2430/files/kajavekiwadoxazatugovike.pdf
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/organic_chemistry_solomons_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/4369/2445/files/89513059596.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/1321832290.pdf
    • https://cdn.shopify.com/s/files/1/0432/2118/8763/files/subaru_forester_manual.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_off0000631f.bin
73e5168c0f0086693e00e15d8eb24c8c85332fb366c1bd5cccb79efe8db9c0e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x631F 5304 bytes
font_01_sfnt_off00007511.bin
28bbe14f655767ca3724de7977efafa5bed3ccf5533cb36bca406b24ab87cdb8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7511 10268 bytes