Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba98372e76705989…

MALICIOUS

PDF

47.8 KB Created: 2020-09-05 22:48:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b1551fd78045da4e20d7c33abe7e985 SHA-1: 1d23561fd52956914afad0113114be2684989220 SHA-256: ba98372e767059893bb1c302949285c58ed711bfae3efb6d048064f34e554781
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to benign content, but one critical link directs to a known malicious redirector. The document body text, though partially corrupted, includes the same search query as the malicious URL, suggesting a lure to entice clicks. The presence of a link farm indicates an attempt to distribute malicious content or traffic through numerous seemingly unrelated documents.

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/wix?keyword=comedy+movies+bollywood+2018+free
    • https://static.usrfiles.com/ugd/b28ae2_f02351bd1ae7499ba95a7e9eec34028a.pdf
    • https://static.usrfiles.com/ugd/de3d83_e8521d260f4445beb561d1a34ac23004.pdf
    • https://static.usrfiles.com/ugd/f103bb_e05fab7c425b4ee0acea69ba71c1be8f.pdf
    • https://static.usrfiles.com/ugd/312e0e_fd6b9516a11843ad86b3e12d0cfa6fed.pdf
    • https://static.usrfiles.com/ugd/bfd504_501715b948ec48d0a41fc1f51a2047d5.pdf
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/bipiwojemilenabido.pdf
    • https://cdn.shopify.com/s/files/1/0458/2447/5299/files/producer_to_producer_maureen_ryan.pdf
    • https://cdn.shopify.com/s/files/1/0436/9511/2347/files/jisuwulitiraxuponowigi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7804/1244/files/22623339625.pdf
    • https://cdn.shopify.com/s/files/1/0437/5996/0218/files/serorovodal.pdf
    • https://cdn.shopify.com/s/files/1/0440/8098/8310/files/49024567482.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/the_key_muscles_of_yoga.pdf
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/letovujamumi.pdf
    • https://cdn.shopify.com/s/files/1/0429/4233/3087/files/50634018057.pdf
    • https://cdn.shopify.com/s/files/1/0448/0398/1463/files/built_by_science_workout.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/961360517.pdf
    • https://cdn.shopify.com/s/files/1/0449/3407/0440/files/22827128411.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/layers_of_fear_dlc_trophy_guide.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_off00007b25.bin
1ead3c7b8c087a726c99d1ff28949e37cf133068831bf5f2277a9fd7a7ae696a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B25 5660 bytes
font_01_sfnt_off00008e78.bin
09d23628589b76350c4e1ae0a2c9e115a42976b31d6ebe78e938fe312bf6bafc
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E78 10492 bytes