Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f8e78baf6b7914…

MALICIOUS

PDF

42.7 KB Created: 2020-08-01 19:04:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f83893a58556a1944b770eb60042e142 SHA-1: 6574ca23e3d28bf2411986f913d26f92b9303153 SHA-256: 07f8e78baf6b7914f99f0fb406a7bc97b53e56f1bc3f391bf2d2a7779bc5aa7e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body also contains numerous links to external PDFs hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The primary malicious intent appears to be directing users to potentially harmful content via the ttraff.com redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/pify?keyword=how+to+make+cold+in+little+alchemy
    • http://files.wolfambassadors.com/uploads/1/3/0/7/130775806/5763b9654d.pdf
    • http://files.lincolnherring.com/uploads/1/3/1/1/131164424/vupibuxoki-xinetebu.pdf
    • http://files.titanjudo.org/uploads/1/3/0/7/130775011/98bb47.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/5996/0218/files/67042989611.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/9568247250.pdf
    • https://cdn.shopify.com/s/files/1/0431/9304/1053/files/23047937370.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0226/files/71496267124.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/lexefuzej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/92161478626.pdf
    • https://cdn.shopify.com/s/files/1/0437/1090/6518/files/sopifa.pdf
    • https://cdn.shopify.com/s/files/1/0435/6990/5825/files/jabikafaxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0405/files/ramupegawirelupinusum.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/41791648743.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d9b.bin
1929b827f8fbea76401f96c626f81d4d275c5260d973bc354c0d9fd3247e9c0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9B 5124 bytes
font_01_sfnt_off00006ef5.bin
64f3783b4f939b7ae42eba628689feeacb72700688d0ac7b9e7ee4dd6bd10742
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF5 15056 bytes