Malicious PDF — malware analysis report

Static analysis result for SHA-256 e097dd2577d7823b…

MALICIOUS

PDF

26.0 KB Created: 2020-10-26 06:25:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e57aafb45f770a9942da57338642aca6 SHA-1: 521f83a8e94f3410d203f7cf22b9adbba04e99cd SHA-256: e097dd2577d7823b7a139987db25b8c137ce4aba48424911b97fc9defc64e26e
152 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which points to a URL that appears to be part of a link farm. The document body, though heavily obfuscated, contains a URL that matches the redirector link. The presence of numerous external PDF links suggests an attempt to manipulate search engine results or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • 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://gettraff.ru/aws?keyword=gray%2527+s+anatomy+coloring+book+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wilugugo/batman_vs_superman_comics_free_download.pdf
    • https://s3.amazonaws.com/tadovu/20975422987.pdf
    • https://s3.amazonaws.com/mibiwivanetuj/3808458778.pdf
    • https://uploads.strikinglycdn.com/files/e3a1857f-ca42-4b52-82b5-fda29addf269/infant_daily_report.pdf
    • https://uploads.strikinglycdn.com/files/b36a0dd5-29d1-4428-9301-675aa450da3f/35399636049.pdf
    • https://uploads.strikinglycdn.com/files/6d4cf361-055f-4761-898f-7b465b884176/xobipufuxivurukabox.pdf
    • https://uploads.strikinglycdn.com/files/c0bb9253-ae21-4bb5-8d2d-1465ce5469e2/jotovurigafil.pdf
    • https://s3.amazonaws.com/labitajaxatufib/tegun.pdf
    • https://s3.amazonaws.com/zuxadol/50090003685.pdf
    • https://s3.amazonaws.com/fofeguj/bernard_werber_les_fourmis_gratuit.pdf
    • https://s3.amazonaws.com/zirojopemup/8961209074.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/63827769153.pdf
    • https://cdn.shopify.com/s/files/1/0499/3826/8318/files/89064033173.pdf
    • https://cdn.shopify.com/s/files/1/0266/9559/8271/files/3394371715.pdf
    • https://cdn.shopify.com/s/files/1/0437/7785/1553/files/55572920100.pdf
    • https://cdn.shopify.com/s/files/1/0482/2899/1130/files/24221827311.pdf
    • https://cdn.shopify.com/s/files/1/0438/4522/2550/files/62259447781.pdf
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/bamij.pdf
    • https://cdn.shopify.com/s/files/1/0266/7882/1047/files/xuduvagezutowi.pdf
    • https://uploads.strikinglycdn.com/files/c8873620-2bcd-441c-93b3-424e75c7ff81/8417870521.pdf
    • https://uploads.strikinglycdn.com/files/b302f5da-75a7-421f-8d1b-3efbffc67640/98847524883.pdf
    • https://uploads.strikinglycdn.com/files/53b810d6-2ca7-4db5-bd45-25330f26d3f7/napejajikoj.pdf
    • https://uploads.strikinglycdn.com/files/47970902-91bd-4c69-ab9b-7b82391c3c4d/68699114885.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f09.bin
72cf7583e454e763c58f1432ca3252daa313df016e380276fae1919df025fabb
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F09 5848 bytes