Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6bcd991c5dc7c18…

MALICIOUS

PDF

49.3 KB Created: 2020-08-01 05:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec299fecb9aaa81d0fce33dc32c8fb38 SHA-1: c01cc422053b0aa16055bd14c40a571e5bf9cc4e SHA-256: b6bcd991c5dc7c18f8d973536136415b52e4e3d89aeb2c5cd4cb5926b37b48b0
154 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.com, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains the same URL and keywords related to 'ip address on iphone', suggesting a phishing or scam attempt. The PDF also hosts a large number of external links, many pointing to Shopify domains, likely as part of a link farm to improve SEO for malicious content.

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=ip+address+on+iphone
    • http://files.dubaiactivelife.com/uploads/1/3/1/6/131606284/8139295.pdf
    • http://files.godswaytshirts.com/uploads/1/3/2/3/132302815/7c24d7928c8eda5.pdf
    • http://files.drtaoka.com/uploads/1/3/1/1/131164393/7087916.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/72276720648.pdf
    • https://cdn.shopify.com/s/files/1/0430/1442/2687/files/25036612626.pdf
    • https://cdn.shopify.com/s/files/1/0437/1061/1605/files/85583114452.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/25167768227.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/relatise.pdf
    • https://cdn.shopify.com/s/files/1/0431/3903/9388/files/89956491881.pdf
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/xepatisujavogojizupa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7798/3653/files/kunalagorasase.pdf
    • https://cdn.shopify.com/s/files/1/0435/9543/2099/files/how_to_remove_commits_from_github.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dotalufakelani.pdf
    • https://cdn.shopify.com/s/files/1/0431/7157/8024/files/45181753658.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0309/files/42593982856.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/
    • https://cdn.shopify.com/s/files/1

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077c3.bin
fbe8a91063613188c8f807430275d48565556cd7e6fa660622139e2f9104a6e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C3 4660 bytes
font_01_sfnt_off00008770.bin
d846d046f1d4537cdb284991e40b9da025e87cddb58eb3c6474254cf26d68187		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8770 10112 bytes
font_02_sfnt_off0000aa0c.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA0C 4324 bytes

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