Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ae7abe54f606b5a…

MALICIOUS

PDF

40.8 KB Created: 2020-08-15 07:51:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb364c3a2bb2801aa5078a033ca6b173 SHA-1: 210f9f1df199ab1f59c2454f2a22ff66ba41f0d8 SHA-256: 1ae7abe54f606b5a0d49de331e4607aca04d713968f044f0e6e7047683ba9c2f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised with the lure "family tree template powerpoint 2007". The ML classifier strongly indicated maliciousness. The PDF also functions as a link farm, with many embedded links pointing to Shopify domains, likely for SEO manipulation to increase visibility of malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document title and a malicious URL.

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=family+tree+template+powerpoint+2007
    • http://digujan.melissaraehairstylist.com/uploads/1/3/2/6/132695384/980e8f546ec8.pdf
    • http://files.dmillsphotography.com/uploads/1/3/1/4/131454012/150016.pdf
    • http://files.zohabharwani.com/uploads/1/3/1/3/131384771/54095282bfa3.pdf
    • https://cdn.shopify.com/s/files/1/0434/0790/0835/files/14728871803.pdf
    • https://cdn.shopify.com/s/files/1/0436/6086/9785/files/12338117829.pdf
    • https://cdn.shopify.com/s/files/1/0437/4583/7208/files/dutam.pdf
    • https://cdn.shopify.com/s/files/1/0435/8661/7501/files/baixar_adobe_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/2742/2632/files/jukuxonefogojagib.pdf
    • https://cdn.shopify.com/s/files/1/0439/8232/3870/files/75621136350.pdf
    • https://cdn.shopify.com/s/files/1/0440/6309/6984/files/beworawuzuwixe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0866/3462/files/healthy_smoothie_recipes_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/.pdf
    • https://cdn.shopify.com/s/files/1/0437/3574/4673/files/palejekipi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062d2.bin
fa0c0eddae7d8e445d1805e5c3a8929724c562062342e82da7efb2d19df44f3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x62D2 5292 bytes
font_01_sfnt_off000074d8.bin
48eea02b448c8373d981bce25716c1b4dcdda5bd7a9e1d96c80682a3f4cf0510
pdf-font-stream PDF embedded font (sfnt) at offset 0x74D8 9796 bytes