Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d6107b579adfdcb…

MALICIOUS

PDF

39.9 KB Created: 2020-08-15 07:50:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5561233df4b811fde07718103315a3de SHA-1: 58608ffa01b9022f04b31cb192a70cdcbe33603e SHA-256: 5d6107b579adfdcb99ef5d6c3ccd2e58f52af1f26d07f8a8f8c691da2d9a9708
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a redirector, indicating a phishing or scam attempt. The embedded URL 'https://ttraff.ru/pify?keyword=duplicate+pan+card+online+free' is a primary indicator of this malicious activity. The presence of numerous PDF links suggests an attempt to manipulate search engine results or distribute further 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.ru/pify?keyword=duplicate+pan+card+online+free
    • http://xabosipe.avakonohiki.org/uploads/1/3/1/4/131452958/2d80191.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5817/5893/files/59532504048.pdf
    • https://cdn.shopify.com/s/files/1/0432/5877/3662/files/37076466641.pdf
    • https://cdn.shopify.com/s/files/1/0431/3038/8642/files/39572882641.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/zegagobuvepenep.pdf
    • https://cdn.shopify.com/s/files/1/0431/8520/9506/files/yg_mp3_downloads.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8179/files/52563948157.pdf
    • https://cdn.shopify.com/s/files/1/0438/4659/8816/files/vocabulaire_anglais_finance.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44628440260.pdf
    • https://cdn.shopify.com/s/files/1/0433/6589/2245/files/improving_vocabulary_worksheets_ks2.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/24472774380.pdf
    • https://cdn.shopify.com/s/files/1/0434/1586/3447/files/98922495823.pdf
    • https://cdn.shopify.com/s/files/1/0440/4002/8325/files/android_google_play_store_keeps_stopping.pdf
    • https://cdn.shopify.com/s/files/1/0434/1517/5317/files/laboratory_experiments_in_microbiology_free.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_off0000603b.bin
d92742322e836b10a9f32cae926fabf8f56690946b530d282ebe799a32667dc0
pdf-font-stream PDF embedded font (sfnt) at offset 0x603B 4968 bytes
font_01_sfnt_off00007135.bin
142f3be1a8f280a033e310ae337350ee385dbfd62d139f33952c240e7d9bd272
pdf-font-stream PDF embedded font (sfnt) at offset 0x7135 9880 bytes