Malicious PDF — malware analysis report

Static analysis result for SHA-256 347d207dcde95a95…

MALICIOUS

PDF

63.2 KB Created: 2020-08-26 12:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1234d0c29e47d302186a1fc529b210f4 SHA-1: 8e3c4ae1a65a23d2667057ce97df1ee7d0ab918d SHA-256: 347d207dcde95a9544ed022cdc8cf3a9f476ff3abcf11283ead9833e4391619f
152 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=%25C3%25BCcretsiz+Travesti+hikayeleri', which is also listed as a malicious redirector. The presence of a link farm suggests an attempt to manipulate search engine results or distribute content broadly. 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.com/pify?keyword=%25C3%25BCcretsiz+Travesti+hikayeleri
    • http://files.chsboosters.net/uploads/1/3/0/9/130969241/82687f67de79af.pdf
    • http://noregor.motscatering.com/uploads/1/3/0/7/130776688/widudigu_kaxojodorixokav_lisififi_sebamigojux.pdf
    • http://wugev.bnbpressonnails.com/uploads/1/3/2/8/132814930/vujewedule_vawemebevufuza.pdf
    • https://cdn.shopify.com/s/files/1/0436/2236/7390/files/vobomuniv.pdf
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/5663086819.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/optical_amplifiers_and_their_applications.pdf
    • https://cdn.shopify.com/s/files/1/0432/5009/0146/files/gowudavotosenisovufuka.pdf
    • https://cdn.shopify.com/s/files/1/0432/1853/4557/files/analysis_of_financial_statements_dk_goel.pdf
    • https://cdn.shopify.com/s/files/1/0431/2530/9601/files/87094045280.pdf
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/cannibal_2013_movie_300mb.pdf
    • https://cdn.shopify.com/s/files/1/0434/1301/2637/files/62066815044.pdf
    • https://cdn.shopify.com/s/files/1/0430/9775/1709/files/gumebe.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_off0000b7a6.bin
91050e83d1900362296429414589c1b6b27bf0441bdb137976874b9d7b38d6c6
pdf-font-stream PDF embedded font (sfnt) at offset 0xB7A6 5220 bytes
font_01_sfnt_off0000c976.bin
6d5d44dfd8f6d7fe87cee7a4bdbf551bf536e8a49c40aed7fa9b71abd00d59c9
pdf-font-stream PDF embedded font (sfnt) at offset 0xC976 11808 bytes