Malicious PDF — malware analysis report

Static analysis result for SHA-256 511d284a11d0434a…

MALICIOUS

PDF

84.8 KB Created: 2020-09-14 03:02:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 015c113b6308ea23e473e97db81307b1 SHA-1: a6b279b5fc4cdbb76c7f0e5f2bc55e15443de69f SHA-256: 511d284a11d0434a573cc7f01b58a6fecf8e4d4bfe4159b5914159ba137b612f
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in conjunction with a search term for 'Pathoma 2017 pdf google drive'. This suggests a phishing or scam attempt to redirect users to malicious content. The document body, though heavily obfuscated, contains the same redirector URL. The PDF also contains a large number of external links, indicative of a link farm, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=pathoma+2017+pdf+google+drive
    • http://ladun.travellingscot.co.uk/uploads/1/3/0/8/130873848/f4562a3.pdf
    • http://dizakije.headlandparkartistprecinct.com/uploads/1/3/0/7/130776647/moganen-zagumenojuzazef-varabep.pdf
    • http://files.kirstynash.com/uploads/1/3/1/4/131437504/8207296.pdf
    • http://tufinulol.bendtrendhomes.com/uploads/1/3/2/6/132695465/pimedoganol-duxovurajo.pdf
    • https://static.usrfiles.com/ugd/c81504_04627c7ae1e7491092ad7437ec8cf952.pdf
    • https://static.usrfiles.com/ugd/4cf28d_7c4ba3b7f5e0422b8def22958b51afd0.pdf
    • https://static.usrfiles.com/ugd/a98ecc_07a518cbd2d84ebaaf826fe67eb252c4.pdf
    • https://static.usrfiles.com/ugd/31bf02_51fc7f91aadd414785c224ca32678a8c.pdf
    • https://static.usrfiles.com/ugd/22739b_0c8ab7c04ca54bd28be5605a818ff538.pdf
    • https://cdn.shopify.com/s/files/1/0429/9948/0473/files/multiple_alleles_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71895612735.pdf
    • https://cdn.shopify.com/s/files/1/0482/4095/1448/files/35675632503.pdf
    • https://cdn.shopify.com/s/files/1/0434/7101/2006/files/corrosion_of_austenitic_stainless_steel.pdf
    • https://cdn.shopify.com/s/files/1/0430/8851/1130/files/solis_4g_inverter_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5421/0980/files/salebob.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/xajowisofizizidewa.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/86669209546.pdf
    • https://cdn.shopify.com/s/files/1/0436/6984/8217/files/73662841357.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0001201e.bin
94b1d96b439077bf71db425f80f47aaf76621e8617da2e7ef20e4d08a7f287a0
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1201E 20624 bytes
font_00_sfnt_off0000e20b.bin
7de49b61c838a7aa7e8a22fa78759e8d4554e811fc620604417615449fa93ae2
pdf-font-stream PDF embedded font (sfnt) at offset 0xE20B 5744 bytes
font_01_sfnt_off0000f587.bin
3b0f7bddd5c10408048f28746f3b9b489b88e97a1c20d35e2de84e3462a31126
pdf-font-stream PDF embedded font (sfnt) at offset 0xF587 12744 bytes