Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cf0b456a1da6b79…

MALICIOUS

PDF

38.1 KB Created: 2020-08-28 08:13:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 509039954156fdfeac2cf1163b3671c7 SHA-1: b9b518651a7429200cc9cf818f5e13ebb36ef4f4 SHA-256: 5cf0b456a1da6b79a266edfacf5b6186a136c7f13c7c4ae1744426c899651777
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, also contains the same malicious URL. This suggests the primary goal is to lure the user to malicious sites, likely for phishing or to download further payloads.

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=onu+kendine+a%2525C5%25259F%2525C4%2525B1k+et
    • http://buzegoba.lovefeastgathering.com/uploads/1/3/1/6/131636879/wewevujag.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/2862/8135/files/wajetijopudejaranur.pdf
    • https://cdn.shopify.com/s/files/1/0438/0593/3730/files/cafe_fernando_kitap.pdf
    • https://cdn.shopify.com/s/files/1/0436/4363/3822/files/95195079840.pdf
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/xojukiwim.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/nufenigu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8689/5522/files/13628101385.pdf
    • https://cdn.shopify.com/s/files/1/0433/1582/2747/files/42722800151.pdf
    • https://cdn.shopify.com/s/files/1/0435/2180/2404/files/accountancy_class_11_solutions.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_off00005707.bin
414e2c9b8259c1ce49e31d299d25a723c330dfb156db203c51b4bad4af4c4b08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5707 4884 bytes
font_01_sfnt_off000067be.bin
91407679ac041a3eed1d644cf0841ed3055189c4281448370073318ade9c4d13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67BE 11240 bytes

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