Malicious PDF — malware analysis report

Static analysis result for SHA-256 7880d2316d4b9476…

MALICIOUS

PDF

42.1 KB Created: 2020-08-04 00:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96d1bbe6f10138c697d958a5b15e1b65 SHA-1: 56eb9fdfeac1942d47e09affa200898d9499a37a SHA-256: 7880d2316d4b947691317b054f9e4eb24cc91f4475cc362b193e91b9e710e37b
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure. The primary redirector URL is `https://ttraff.com/pify?keyword=antique+jewellery+designs+catalogue+pdf`, which is flagged as malicious. The document body, though heavily obfuscated, contains references to this URL and other Shopify links, suggesting a phishing or scam attempt.

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.com/pify?keyword=antique+jewellery+designs+catalogue+pdf
    • http://files.100womenwhocareannapolis.com/uploads/1/3/0/7/130739379/zudojewupidez.pdf
    • http://files.kholabakso.com/uploads/1/3/1/8/131871687/7cf536ae.pdf
    • http://files.elephantmomma.com/uploads/1/3/2/6/132683181/4e6e1e8ff9.pdf
    • http://files.nebraskatraileroutlet.com/uploads/1/3/1/4/131453574/7641998.pdf
    • http://files.sipplemonuments.com/uploads/1/3/1/8/131871424/mejerapij.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7287/9782/files/ziwexeremasedelarabuxepej.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/goodlife_kanye_west_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0427/9736/7452/files/wovevax.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/xelajewunapuzunidigo.pdf
    • https://cdn.shopify.com/s/files/1/0436/2724/9826/files/valogawisedube.pdf
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/65600750729.pdf
    • https://cdn.shopify.com/s/files/1/0433/6523/6901/files/musivafiturebukemepox.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/21902757478.pdf
    • https://cdn.shopify.com/s/files/1/0430/9532/6887/files/81880313415.pdf
    • https://cdn.shopify.com/s/files/1/0432/0827/8171/files/gajoxufigidaruza.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_off00006619.bin
89175785f7122c498410e2f53950f1174e982242c668826d5c80fb6443611694
pdf-font-stream PDF embedded font (sfnt) at offset 0x6619 5708 bytes
font_01_sfnt_off000079b5.bin
c4c8d4a3c7387f373e4ab45ffc0ee73c955aac0876b4fccaa64833a9aa60ca5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x79B5 9808 bytes