Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c50a85a825340f…

MALICIOUS

PDF

43.8 KB Created: 2020-08-09 22:48:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a072d4ba977987e1663c9c917985693 SHA-1: 7572189d76bbc87e8e213bcef1b45854fff2052c SHA-256: f3c50a85a825340fff3fc5603882409e73f89c949257dc8a95dea26e4b9a3194
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Atoms and molecules class 9 ncert solutions pdf' and embeds a mass of external links. One of these links, 'https://ttraff.com/pify?keyword=atoms+and+molecules+class+9+ncert+solutions+pdf', is identified as a malicious redirector. The document body also contains numerous Shopify URLs, likely part of a link farm designed to improve SEO for malicious content. The presence of a fake invoice lure further supports the malicious intent.

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.
  • 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.com/pify?keyword=atoms+and+molecules+class+9+ncert+solutions+pdf
    • http://files.hollymsmithphotography.com/uploads/1/3/0/7/130739715/dac13ce.pdf
    • http://files.frechettefarms.com/uploads/1/3/0/9/130969403/xukukewefarizarek.pdf
    • http://files.ineslampreia.com/uploads/1/3/2/7/132712326/0a2a2aa.pdf
    • http://files.millerunitedmethodistchurch.com/uploads/1/3/1/0/131070030/5370156.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4555/files/vozakimajodoza.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/dopufobuwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/97397107174.pdf
    • https://cdn.shopify.com/s/files/1/0450/7402/2550/files/eddie_torres_volume_1.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/integral_calculus_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/53090989756.pdf
    • https://cdn.shopify.com/s/files/1/0432/4484/7266/files/36076210930.pdf
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/1975194838.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9201/files/cfb_boiler.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/bizebagezavude.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/28298891164.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/sufanugafaluvade.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_off00006cfd.bin
e201a12b68ab10a9255853b6d4c9e8e96b88994d4aba7dec86036be8648aeec3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFD 5448 bytes
font_01_sfnt_off00007f67.bin
faf5483f68347be0267ef43165e56432252456934d7115d9099215231539a72d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F67 10180 bytes