Malicious PDF — malware analysis report

Static analysis result for SHA-256 0343e10454c218c7…

MALICIOUS

PDF

57.2 KB Created: 2020-08-17 10:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f03d613aff662e038ee87d39daec59b SHA-1: 517f5a130e4e72da6a217ae62ebf1b62949ef93a SHA-256: 0343e10454c218c7ab6bbb455a19c5406be793c874508122715f7d28aba940c5
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 Shopify domains hosting other PDFs, suggesting a link farm or redirection scheme. One prominent link, 'https://ttraff.com/pify?keyword=fda+adverse+event+reporting+system+public+dashboard', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and references to FDA adverse event reporting, indicating a phishing or scam lure.

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=fda+adverse+event+reporting+system+public+dashboard
    • http://kogamoliw.fuerschbachpublishing.com/uploads/1/3/1/4/131482976/zadowe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/wadix.pdf
    • https://cdn.shopify.com/s/files/1/0452/1289/3344/files/34501154973.pdf
    • https://cdn.shopify.com/s/files/1/0432/9914/3838/files/bufukitedukavidewasugif.pdf
    • https://cdn.shopify.com/s/files/1/0428/8738/1155/files/likurupave.pdf
    • https://cdn.shopify.com/s/files/1/0428/2282/8198/files/10429943472.pdf
    • https://cdn.shopify.com/s/files/1/0433/8375/0814/files/fubefuxavabedevipula.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/63838905890.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2494/files/mepagi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/44767215864.pdf
    • https://cdn.shopify.com/s/files/1/0431/5296/5789/files/antenatal_care_guidelines_fogsi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3092/1895/files/b._sc_maths_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/5838/0446/files/jukuro.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_off0000a03d.bin
41cf6155aaac50b2ada6f0eb67922c756ddf95ff88f862ca24db0b83577f4694
pdf-font-stream PDF embedded font (sfnt) at offset 0xA03D 5744 bytes
font_01_sfnt_off0000b3a3.bin
c6ba546ff52bc2cd6df1e8f0761774eac964556bb8ee9df51b16c8411e926e86
pdf-font-stream PDF embedded font (sfnt) at offset 0xB3A3 10584 bytes