Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1a10f3eb34d7b6…

MALICIOUS

PDF

41.3 KB Created: 2020-08-19 08:39:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 529fb6a97318d6159fb1fff34bb1e68d SHA-1: 6caff8700359482d249e7df0e970c4818e0bc9fe SHA-256: be1a10f3eb34d7b691b3f757248b540edc10776d38e86d6703ce90f0e62b095b
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious content. One of the embedded links points to a known malicious redirector. The document body contains garbled text and embedded URLs, further supporting the malicious intent.

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=darth+vader+meme+template
    • http://navevega.thecenterlifeinbalance.com/uploads/1/3/0/8/130814229/pupajubegafeba-kepolini-bilawe.pdf
    • http://files.tampabaypoodleclub.org/uploads/1/3/1/4/131483281/zozenofanumeb.pdf
    • http://files.barrierfreebuildingdesignpartnership.com/uploads/1/3/0/9/130969080/2021735.pdf
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/podowutuxona.pdf
    • https://cdn.shopify.com/s/files/1/0431/9779/2411/files/disomaxaduvuzoliz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/pagosibozukuga.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/xipoturu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/jibudilagigopuru.pdf
    • https://cdn.shopify.com/s/files/1/0433/3197/7369/files/31030878996.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/nodabogez.pdf
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/72966148653.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9212/files/98640542540.pdf
    • https://cdn.shopify.com/s/files/1/0430/6268/9946/files/brucellose_en_algerie.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/xosodedopeterawu.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_off0000643d.bin
81a1784d21ce73bd37ec70c9557b282bd9567cc1ea2097f2d00a201e1a8c072f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x643D 5080 bytes
font_01_sfnt_off0000756d.bin
5ff1dc9e7a747072af04047b4d898000f943c22a5d84bfa5a99893dca4673ac0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x756D 10228 bytes

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