Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec68622da48ebf8…

MALICIOUS

PDF

42.6 KB Created: 2020-08-06 08:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 779bbbdb94bd4d9f0768758f390ded78 SHA-1: 93c22fd19132ff6db79a92e1b0b6023d15e5e6d7 SHA-256: 7ec68622da48ebf8b1d977ba494a4ee40d08b88768e9763b3a5c25ced031ffa6
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body text, though garbled, includes the same URL found in the malicious link heuristic, suggesting an attempt to disguise malicious links as search results or document downloads. The presence of a large number of external links, many hosted on Shopify, indicates a link farm designed to attract traffic to potentially malicious destinations.

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=arrest+search+and+investigation+in+north+carolina+pdf
    • http://files.bellesandbroomsticks.com/uploads/1/3/0/7/130739232/walalaseboretu-guxebizizubopuv.pdf
    • http://files.mrsquam.com/uploads/1/3/0/7/130776609/5586067.pdf
    • http://files.rememberingresistance.com/uploads/1/3/1/0/131070518/2184277.pdf
    • http://files.ninjamagik.com/uploads/1/3/0/8/130874629/jatupisejumelovavog.pdf
    • http://files.bayouthrows.com/uploads/1/3/0/7/130740429/dozafogivefu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7558/files/76292869805.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/73801622313.pdf
    • https://cdn.shopify.com/s/files/1/0434/3247/6838/files/que_es_el_aprendizaje_activo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8374/2884/files/33606919583.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/el_cuervo_allan_poe.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2520/files/vagozojezawarukozisa.pdf
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/23003956750.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9432/files/17903990057.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/autodesk_sketchbook_pro_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/56221053093.pdf
    • https://cdn.shopify.com/s/files/1/0429/1048/2588/files/xitiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/2515/4716/files/88805174334.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9725/files/fodorexido.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zawitowawipujeko.pdf
    • https://cdn.shopify.com/s/files/1/0434/5033/5384/files/daruruxinemilunixut.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_off0000659a.bin
3aecf7392e241aceefc29347938ab0eb96c327932b5200355dc68950a271d57e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x659A 5464 bytes
font_01_sfnt_off00007837.bin
68488ef597bb3606653550ecabbb3a62307fbe79682f187c27bcdc2845f66d2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7837 10660 bytes

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