Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed62dc686012c97…

MALICIOUS

PDF

42.3 KB Created: 2020-08-03 01:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ded6c3e918e1e252b97054d5298fddf SHA-1: d57021426b5088061228b7cb09536e50731f77f5 SHA-256: 0ed62dc686012c97490737fe47586c871366f27a06e1025938846be75b1cf813
154 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Ty beanie baby pricing guide' and embeds a significant number of external links, many pointing to Shopify, but one critical link directs to a known malicious redirector. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the presence of embedded URLs and the redirector link suggest an attempt to lead the user to malicious infrastructure, potentially for phishing or malware distribution.

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.ru/pify?keyword=ty+beanie+baby+pricing+guide
    • http://files.collidexroads.com/uploads/1/3/1/4/131437535/nujurezikiw-benones-zipogexe-wevarokaga.pdf
    • http://files.holidaycottagediss.com/uploads/1/3/2/6/132695551/vazusate.pdf
    • http://files.johnsimmonline.com/uploads/1/3/0/7/130776100/julobibutewadagoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8124/4577/files/underline_on_discord.pdf
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/84628152201.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46391305542.pdf
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/66996858593.pdf
    • https://cdn.shopify.com/s/files/1/0434/4178/2946/files/ronusofidi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1347/1384/files/kiwutefajutudopamotasuxit.pdf
    • https://cdn.shopify.com/s/files/1/0439/6810/2558/files/70118686930.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/24047444056.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7913/files/61895458506.pdf
    • https://cdn.shopify.com/s/files/1/0427/7665/8087/files/don_t_mine_at_night_lyrics.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_off00006784.bin
5b9f987ca2b1f9a3b3c7604b443927e87bbdfdc3a2e398f94ccc96d18b481e5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6784 5224 bytes
font_01_sfnt_off00007957.bin
b7258a35b363bb195f34507d8ad92f594d21a37623ab3f862891b99060abfc87
pdf-font-stream PDF embedded font (sfnt) at offset 0x7957 10364 bytes