Malicious PDF — malware analysis report

Static analysis result for SHA-256 253e29e0c114422d…

MALICIOUS

PDF

54.4 KB Created: 2020-08-16 12:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a18cdccbbbde11e4ac5830be90b64ae SHA-1: 91e62b7264854ec320aa89fa91c2969812391a4a SHA-256: 253e29e0c114422d55bacabf4efc148dac54e816cdac74505064cc2ed2a64dac
140 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector (ttraff.com). The document also includes a large number of external PDF links, many hosted on cdn.shopify.com, suggesting a link farm or SEO manipulation tactic. The presence of a QR code lure further indicates a phishing or social engineering attempt. The primary malicious URL is https://ttraff.com/pify?keyword=appery.+io+app, which is likely used to redirect the user to a malicious site.

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=appery.+io+app
    • http://favorebi.dallasbrownmusic.com/uploads/1/3/0/9/130969060/tabugozetuwu_modavibowox_xuzanowijepud.pdf
    • http://files.fourseasonsbooks.com/uploads/1/3/1/4/131438038/7ea4014ec0.pdf
    • http://files.hccvermillion.net/uploads/1/3/1/3/131398507/xoxinazexizozov.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96704933611.pdf
    • https://cdn.shopify.com/s/files/1/0429/7759/1449/files/kisabekarudijunirufazorox.pdf
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/76200526061.pdf
    • https://cdn.shopify.com/s/files/1/0432/0775/3888/files/57069757516.pdf
    • https://cdn.shopify.com/s/files/1/0437/2499/6758/files/plant_virology_hull.pdf
    • https://cdn.shopify.com/s/files/1/0435/5627/4339/files/hunter_leveling_spec.pdf
    • https://cdn.shopify.com/s/files/1/0434/8493/8390/files/79011249405.pdf
    • https://cdn.shopify.com/s/files/1/0439/2543/8619/files/pdf_file_reader_app_download_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0434/7097/9238/files/52059502293.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4665/files/65435501424.pdf
    • https://cdn.shopify.com/s/files/1/0438/2746/2301/files/98453702357.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_off000098d3.bin
7cb57baaa0eb5878b4e51aabedf387be759722870b1574d5bcddb5ef4d1ec428		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98D3 4724 bytes
font_01_sfnt_off0000a8ff.bin
b96804d59558f278b1c9b976efa36bc5cb8dbe67c01578902bf449862ba566e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8FF 10700 bytes

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