Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d545bdea256427a…

MALICIOUS

PDF

39.7 KB Created: 2020-09-05 05:39:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0071bc89723e6b0defa0333cc9b160a0 SHA-1: 7f457511d379ec4b86c4c374f6ce97789b7010ee SHA-256: 5d545bdea256427a211b191c25ac81214689519f8615738fc1728f64dac2fed7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link farm designed to appear as relevant content, but it redirects to malicious infrastructure. The primary malicious URL is https://ttraff.me/wix?keyword=miss+world+2016+question+and+answer. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lure users to malicious sites, likely as part of a phishing or scam campaign.

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.me/wix?keyword=miss+world+2016+question+and+answer
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/35e1ce_730239d4ddf6418199df5a07c5fd5f32.pdf
    • https://static.usrfiles.com/ugd/70e5f7_88bb52a4b2b248f997dca075de800040.pdf
    • https://static.usrfiles.com/ugd/111c46_55c9338ad6004612898e4a8b519397cf.pdf
    • https://static.usrfiles.com/ugd/67e251_98f23b04e442424e91ef2c2ea77b3f21.pdf
    • https://static.usrfiles.com/ugd/dbbfd0_0edbb8523f1d4921abc7402de2d3d896.pdf
    • https://static.usrfiles.com/ugd/67e251_1587b246567e46adad3088645aec128a.pdf
    • https://static.usrfiles.com/ugd/ab0441_68a3c108ed144c7cba804356afdaac36.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/cable_stayed_bridge_construction_method.pdf
    • https://cdn.shopify.com/s/files/1/0432/6726/0576/files/application_letter_for_any_position_format.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/bldc_motor_drives.pdf
    • https://cdn.shopify.com/s/files/1/0428/1116/2790/files/vedakefanuvedifudejovo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7618/2426/files/ajio_online_shopping_app_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0913/8075/files/zigedapunerepenumilin.pdf
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/popumofafujutowesif.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b44.bin
f1f3aff7b75c4c9b13d1a595d1fc058a31c0ba81d836af93c63facc3f80ba300
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B44 5520 bytes
font_01_sfnt_off00006e2c.bin
88fb70abc1af9c253337ebaf8edc7816b05e31c44f54c969b820243247e3acee
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2C 10420 bytes