Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc56dd450da5bb7…

MALICIOUS

PDF

60.1 KB Created: 2020-08-12 22:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40eff082328ea6839a0592c46da49a47 SHA-1: 972616ad4d91e391ec47cbef7e519e09bbd6af3c SHA-256: 9fc56dd450da5bb72b74b4933c915932741181f2e2e7d66f1b3959423eb69bf9
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=tipos+de+carga+electrica+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to increase visibility and traffic to malicious sites. No scripts were extracted, and the document body was heavily obfuscated, but the malicious redirector link is a strong indicator of 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.cc/pify?keyword=tipos+de+carga+electrica+pdf
    • http://files.sheltiesalberta.com/uploads/1/3/2/6/132695586/potora.pdf
    • http://files.smokymountainengraving.com/uploads/1/3/0/9/130969960/fedawuf.pdf
    • http://files.thesummittgroupllc.com/uploads/1/3/0/9/130969498/7773324.pdf
    • http://files.samrahhairandbeauty.com/uploads/1/3/0/7/130739616/juwebupesom_lapupuluzon_rilanoj.pdf
    • http://zasutepe.thepaintedvillain.com/uploads/1/3/0/8/130814328/7570620.pdf
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/13136318442.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7082322425.pdf
    • https://cdn.shopify.com/s/files/1/0428/1185/0918/files/britannicus_rsum.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/arcmap_10_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0435/7141/3160/files/miranid.pdf
    • https://cdn.shopify.com/s/files/1/0432/6490/1270/files/tavolajiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/6248/5407/files/85724965018.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdf
    • https://cdn.shopify.com/s/files/1/0435/6718/6079/files/xifuvovajif.pdf
    • https://cdn.shopify.com/s/files/1/0440/1440/3742/files/53079899599.pdf
    • https://cdn.shopify.com/s/files/1/0436/7872/8345/files/31938863442.pdf
    • https://cdn.shopify.com/s/files/1/0435/7177/3601/files/nepenimupofajitam.pdf
    • https://cdn.shopify.com/s/files/1/0432/8652/8155/files/19474785022.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000091e1.bin
746f8125a1051856f20c6d0c22d15073952fc896e5fd1f25d96fee10b64730d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x91E1 5272 bytes
font_01_sfnt_off0000a3d7.bin
21707d0bde8328a723bd7a69fa08231f4c4ab427742b5efab37b966efa033923
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D7 12664 bytes
font_02_sfnt_off0000cce5.bin
2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357
pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE5 16060 bytes