Malicious PDF — malware analysis report

Static analysis result for SHA-256 200db3db45edd2cb…

MALICIOUS

PDF

34.0 KB Created: 2020-08-09 18:26:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 335c863d929b446bede2549c78251691 SHA-1: a856f3cb13d248e106daaa29a346339630e2ed2b SHA-256: 200db3db45edd2cbe26d5291fa735bc45d62ed6403f8fb58bd65e0e2d678bde5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=alphabet+letters+to+trace+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites. No scripts were extracted from this sample.

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=alphabet+letters+to+trace+pdf
    • http://files.zimmband.com/uploads/1/3/0/7/130739968/mivagezizurarew.pdf
    • http://files.msbooksandart.com/uploads/1/3/1/3/131384442/vasuz-joxixelano-suzuxa-zugirom.pdf
    • http://files.asthewoodturnzne.net/uploads/1/3/0/9/130969037/18022.pdf
    • http://files.fhendodontics.com/uploads/1/3/2/6/132695384/palujuzobixumap_zadedopipubim_javolot.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/99361443707.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/67606779521.pdf
    • https://cdn.shopify.com/s/files/1/0433/7745/9363/files/apiculture_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/7514/1794/files/vanejokorisubak.pdf
    • https://cdn.shopify.com/s/files/1/0437/8905/8206/files/kepadufananoxipekokafasi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/tesepu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1309/3029/files/solved_accountancy_project_for_class_12_cbse.pdf
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/denis_diderot_encyclopdie.pdf
    • https://cdn.shopify.com/s/files/1/0432/3436/1508/files/ave_maria_bach_piano.pdf
    • https://cdn.shopify.com/s/files/1/0433/9744/7836/files/buzifoxemoxazofam.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/91107621462.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_off0000478e.bin
f727071a728472e7258fa9d246a4ec50bcc66722ee1aba1e639a025097d712f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x478E 5372 bytes
font_01_sfnt_off000059c2.bin
2f0708e4e5d2b256b2247e547bb30852a988fa26bed890cd80cef27dd8098875
pdf-font-stream PDF embedded font (sfnt) at offset 0x59C2 9756 bytes