Malicious PDF — malware analysis report

Static analysis result for SHA-256 f229748f0e482e55…

MALICIOUS

PDF

46.8 KB Created: 2020-08-23 05:39:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4782d87dac5b9a31eee31dd2053223d5 SHA-1: 150423c2960faeacb1512e4d0e93dd1b4ae4d038 SHA-256: f229748f0e482e557bf0bcce2b9a27bc22c7ea39d44ca5e221ba2c580e0b2c1a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to a known malicious redirector. The document body, though partially corrupted, contains text suggesting it is a lure for 'interview questions and answers for retail jobs'. The primary malicious URL, https://ttraff.cc/pify?keyword=interview+questions+and+answers+for+retail+jobs, is likely used to redirect the user to a phishing or malware distribution site. The PDF also hosts a large number of external links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse.

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=interview+questions+and+answers+for+retail+jobs
    • http://files.ngsprephoops.com/uploads/1/3/1/1/131163712/worixifupazax_jogixuses.pdf
    • http://xirim.w-here2stay.org/uploads/1/3/2/6/132682347/4794229.pdf
    • https://cdn.shopify.com/s/files/1/0431/9589/1871/files/gopagalinij.pdf
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/xiwevirugedalopobora.pdf
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/zevukapifomewagog.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9461/files/manualidades_con_reciclado.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/dumakivawunenidozotovut.pdf
    • https://cdn.shopify.com/s/files/1/0431/9268/0605/files/master_sanitary_fittings_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0437/3757/9674/files/washing_pole_dark_souls.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/14978944880.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/bobcat_843_specs.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/fabomotovivusukubakan.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/manually_backup_apple_watch.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_off00007885.bin
337f80c9935e8a4b057b7f625a1a443ecb09e3825e055d9848612626cc16279d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7885 5332 bytes
font_01_sfnt_off00008ac7.bin
db1cffea1439e5d8c4bc606c55a7ff99109eafe04214f2496777dfb78c56db49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC7 10476 bytes

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