Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f67d31f1efdd52…

MALICIOUS

PDF

41.7 KB Created: 2020-08-15 00:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbf49d6e4ffef87f70ecde88ec92474f SHA-1: 29e87ac926b7ea8ae09fcd81a28c056903cdf265 SHA-256: c2f67d31f1efdd5243ee47633c5bb021b63666659fbae01c3d8c55e1983a3529
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF contains a prominent link to 'ttraff.com', identified as a malicious redirector. This, combined with the heuristic firing for 'PDF_MALICIOUS_REDIRECTOR_LINK', strongly suggests the document's purpose is to redirect users to malicious content. The presence of a large number of external PDF links, as flagged by 'PDF_SEO_LINK_FARM', indicates a link farm strategy to potentially improve SEO for malicious sites or to distribute malware. The document body, though heavily obfuscated, contains the target URL and other Shopify links, reinforcing the lure.

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=marketing+persona+template+example
    • http://files.rlernerley.com/uploads/1/3/1/4/131438056/1490168.pdf
    • http://files.sarahmeganjenkins.com/uploads/1/3/2/6/132682070/e6cc54160.pdf
    • http://files.theravenreview.org/uploads/1/3/1/6/131606390/5d83495918.pdf
    • https://cdn.shopify.com/s/files/1/0441/2017/8840/files/eft_bullet_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0741/files/5964007484.pdf
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/discipline_priest_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/22._1_disclosure_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/pokemon_insurgence_shiny_stone.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mesujegixaxufusataxa.pdf
    • https://cdn.shopify.com/s/files/1/0437/7883/4586/files/building_code_basics_residential.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/metric_bolt_and_nut_dimensions.pdf
    • https://cdn.shopify.com/s/files/1/0430/7219/2669/files/nelson_grade_12_biology_textbook_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/6790/0061/files/world_breastfeeding_week_2020_theme.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_off00005c46.bin
8afa8992d83953e36f5e457fbd19ec96503a63d122e648a7f92d9f23e2dd8b67
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C46 5276 bytes
font_01_sfnt_off00006e33.bin
eceb5ea0ccfbde1397de7bb2ec475353735757ab9550d03e71d7f381e0c920ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E33 13968 bytes