Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd4b8dd430566c6…

MALICIOUS

PDF

47.5 KB Created: 2020-09-05 23:39:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44e31c6c3834efae5861ac0410a828f7 SHA-1: 62aa156dec394575f834b1906a488f3aea36efaa SHA-256: 0fd4b8dd430566c68c0d59ce29d8bfdf53190f770d0856f6b6a9c80283143fca
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, which is flagged as malicious. The document body and heuristics indicate a lure related to 'hipaa hitech training quiz answers', likely intended to trick users into clicking the malicious link. The presence of numerous external PDF links, many pointing to benign Shopify domains, suggests an attempt to obscure the malicious redirector within a larger link farm.

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.link/wix?keyword=hipaa+hitech+training+quiz+answers
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/sinopipoxilazexulabul.pdf
    • https://cdn.shopify.com/s/files/1/0451/3703/5429/files/best_risk_management_books.pdf
    • https://cdn.shopify.com/s/files/1/0433/7546/0517/files/15454904956.pdf
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/bmw_cars_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0428/3092/1895/files/17906788543.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kivamusefelozadadazub.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/32090297076.pdf
    • https://cdn.shopify.com/s/files/1/0437/6307/3181/files/witcher_3_arachas.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3126/files/vasumukajebati.pdf
    • https://cdn.shopify.com/s/files/1/0438/6881/5528/files/63198477363.pdf
    • https://static.usrfiles.com/ugd/26481d_182e20ef82ce49ee99eff7c4626cf85b.pdf
    • https://static.usrfiles.com/ugd/b8c837_37cc14b2892646c79dc8fb92c192adb8.pdf
    • https://static.usrfiles.com/ugd/b80405_dd71216721444893bcb9ced8c29262e8.pdf
    • https://static.usrfiles.com/ugd/b8c837_efaacaa5e8d147eca01cd6c3f4c7b35a.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dae.bin
4e4dd31a6149b1009e2c3a1553afe117a16d82d02eda0627684145a88b8895c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAE 5164 bytes
font_01_sfnt_off00007f47.bin
30cebee87687bc4f5eef7568598f55c5cfe4a232120968e0127614ed7a4a3b54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F47 10384 bytes
font_02_sfnt_off0000a2aa.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2AA 4324 bytes

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