Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b4aa11b7a9d9883…

MALICIOUS

PDF

55.9 KB Created: 2020-08-04 14:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59ba94ee674d759e7ce054b1de4cb3e8 SHA-1: 34ad92ef4093e363a9da637516b4b2cea2277412 SHA-256: 4b4aa11b7a9d9883ae84e9b66fe5a4c213abc47bb45a985ac5ec3e10fbb45c93
120 Risk Score

Malware Insights

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

The PDF file contains a lure for a graphic designer CV, but the embedded links redirect to a known malicious URL (ttraff.ru). The heuristic firings indicate a malicious redirector and a link farm, suggesting the primary goal is to drive traffic to malicious infrastructure. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or redirection attack.

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.ru/pify?keyword=graphic+designer+cv+portfolio+pdf
    • http://files.spoilmefresh.net/uploads/1/3/1/3/131380183/zosawavajid-xoxapibasas-wonukugek.pdf
    • http://files.bethbooram.org/uploads/1/3/2/8/132814286/d6fdacc1c201.pdf
    • http://files.highlandroofingcontractors.co.uk/uploads/1/3/0/7/130739146/7432480.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/tatewerurora.pdf
    • https://cdn.shopify.com/s/files/1/0432/2459/6642/files/56845332988.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/74491340717.pdf
    • https://cdn.shopify.com/s/files/1/0434/0593/4759/files/5e_druid_wild_shape_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/9507/2674/files/difference_between_dates.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3344/files/sosaborurulifo.pdf
    • https://cdn.shopify.com/s/files/1/0435/7016/7966/files/mopexoxoxekekowav.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/gapagusatabuk.pdf
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/42030236048.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/webimedokovin.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7367/files/89545222005.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_off0000970c.bin
0301021864eff53aca1ebb5de2a40414f331f4caadf2b7e0ccea84fe91d2a70c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x970C 5508 bytes
font_01_sfnt_off0000a9cf.bin
ea0f0484b035126281fc6ab9eb0578cac676b2a4f8f6fcabe6184b8d7d312ee0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9CF 12760 bytes

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