Malicious PDF — malware analysis report

Static analysis result for SHA-256 503eb5edfd533243…

MALICIOUS

PDF

43.4 KB Created: 2020-08-24 04:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af0447da79e812334d3f4c1859396a08 SHA-1: 1c17079a4b73a7e7f4b90483c31d10b575a74ff8 SHA-256: 503eb5edfd53324396796554ddabd9fccb60f7e4677efbbcccd3921813f3e44e
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, one of which points to a known malicious redirector. Heuristics indicate a lure for advance-fee scams and fake payment requests. The document body, though heavily obfuscated, contains text related to payment requests and includes the malicious URL. The presence of numerous external PDF links suggests a link farm used for SEO poisoning or traffic redirection.

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=stop+payment+request+letter+format
    • http://files.michaeltmeier.com/uploads/1/3/1/8/131856392/778293.pdf
    • http://files.blackgirlscode.com/uploads/1/3/0/8/130873787/zesus_gojaxofofiwel_ditug.pdf
    • http://files.raesandwaves.com/uploads/1/3/1/4/131411197/63aee290.pdf
    • http://kevogaj.wageandhourcalc.com/uploads/1/3/0/8/130873851/e991066.pdf
    • http://nuxefab.davidagordon.us/uploads/1/3/0/8/130874575/zodaxexepepunuz_wejividutojeki.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/outside_sales_resume_examples.pdf
    • https://cdn.shopify.com/s/files/1/0432/5978/9472/files/absceso_cerebral_neurocirugia.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9538/files/kexutumesuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/zepupinokuwaro.pdf
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/xugakibunepowedotamodomir.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/65059185397.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2536/files/action_theme_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/ruwokunife.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/83485500960.pdf
    • https://cdn.shopify.com/s/files/1/0432/6791/5936/files/kinododokosiweduzefap.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_off00006b71.bin
45c3e112b9b091ee99320ec697192e8227d17e8fa1dbe339df593d9929a31bca
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B71 5376 bytes
font_01_sfnt_off00007da8.bin
f4d3c27802ae6991d12259c27598d958fd0ef18893b94253f5e79ebedc5ad026
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA8 10188 bytes