Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ce179d1fd497fc1…

MALICIOUS

PDF

42.6 KB Created: 2020-08-30 15:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d300742ed1b6e5c2b8b39efcf9fe7e08 SHA-1: b0add3ae19cc98c016fca5d375fdab1e32975d61 SHA-256: 8ce179d1fd497fc1e07025dd6d1fb236183439be54fdc153a263ea6ddd015258
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a redirector service. The primary malicious URL identified is 'https://ttraff.cc/wix?keyword=o+reilly+auto+parts+fayetteville+nc', which is designed to lure users by mimicking local business search results. The PDF also hosts a large number of external links, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier strongly indicated maliciousness.

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/wix?keyword=o+reilly+auto+parts+fayetteville+nc
    • https://static.usrfiles.com/ugd/ea2f88_1c32d7d6f17d46e186bebf16da453e01.pdf
    • https://static.usrfiles.com/ugd/225520_c02e203c48f14b5793cff48fe30714ad.pdf
    • https://static.usrfiles.com/ugd/d54300_839c885e3f494d6ab7280ecfc67d89b6.pdf
    • https://cdn.shopify.com/s/files/1/0427/8334/2748/files/ganigob.pdf
    • https://cdn.shopify.com/s/files/1/0450/6232/4376/files/brazelton_scale.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/pefaxujoxogejo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2316/3801/files/kekuzilazat.pdf
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/18971420124.pdf
    • https://static.usrfiles.com/ugd/e3ff21_22c48247c8c942048f2fedf16b5355ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_88ca40505ca84e849957cd6520c240bc.pdf
    • https://cdn.shopify.com/s/files/1/0428/7217/6799/files/xefojodod.pdf
    • https://cdn.shopify.com/s/files/1/0436/5615/1190/files/80078766285.pdf
    • https://cdn.shopify.com/s/files/1/0431/7852/4831/files/28603036092.pdf
    • https://cdn.shopify.com/s/files/1/0430/3575/4650/files/rurigiditizesamepakaz.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005785.bin
1042a7f3eedb89eac6c1e0a0d9ab202b3ccd4ac51a914ce31b36082e14a04c5c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5785 2856 bytes
font_00_sfnt_off000045c3.bin
0326d06c0627dbf97faa060fc0b35002da5d25b73442e3915338b9dc2be01266		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45C3 5196 bytes
font_02_sfnt_off000063ce.bin
5aa9cd48fc1f3445b8d4eea2549cbd3059d0e14b1d7b0b39347528852242c755		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63CE 10168 bytes
font_03_sfnt_off000086eb.bin
c5717b09ab344b2d504e82a20f5e0fa8b84a5a2f636431b90264bfbfe763f5cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86EB 16312 bytes

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