Malicious PDF — malware analysis report

Static analysis result for SHA-256 f017dbe7269ee58c…

MALICIOUS

PDF

41.0 KB Created: 2020-09-07 21:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52f2e72d90a694b0df55c434bfbee0e3 SHA-1: 3195a16f3c16c16ff94f02543ee88a1d82e70e4b SHA-256: f017dbe7269ee58cf0e36ee93024d3d234feed8021bb85dd0a2a7d8511bb0500
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.link/pify?keyword=sephora+oil+blotting+sheets', is designed to redirect users to potentially harmful content. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF documents, suggesting an attempt to manipulate search engine results or distribute content through a large number of links. No scripts were extracted from this sample.

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.link/pify?keyword=sephora+oil+blotting+sheets
    • https://static.usrfiles.com/ugd/24d943_789b8936532144218f9bf73cba4c2483.pdf
    • https://static.usrfiles.com/ugd/e8e253_2d3a515525e8468589b5c8a6c6c24f7b.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_e85e10297625442e85160e4711033866.pdf
    • https://static.usrfiles.com/ugd/8bf3fc_641e6c24ea2a48e996d9204b24f948c1.pdf
    • https://cdn.shopify.com/s/files/1/0434/4584/6168/files/exercicios_geradores_e_receptores_pd.pdf
    • https://cdn.shopify.com/s/files/1/0437/8696/1045/files/asrb_steno_admit_card_2017.pdf
    • https://cdn.shopify.com/s/files/1/0432/0090/5380/files/10297682991.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/64254344290.pdf
    • https://cdn.shopify.com/s/files/1/0432/6889/8966/files/saxupajugudafuxig.pdf
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/30285491449.pdf
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/overleaf_latex_presentation_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/exacto_knife_target.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4567/files/aldane_sheet_metal_pty_ltd.pdf
    • https://static.usrfiles.com/ugd/529385_d233099bdc334e93b0989861484fb4c8.pdf
    • https://static.usrfiles.com/ugd/856cea_81686bc1418e4c0eb0ccb131120ac084.pdf
    • https://static.usrfiles.com/ugd/b8c837_381f744ec5744545b72be5774833d542.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004cbd.bin
58c4e3ed9d714a7f1f57b88b1884dcdc262c6f42ac4e9d5c417868828311345a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4CBD 5324 bytes
font_01_sfnt_off00005ec7.bin
6e19d5c400420a28921386f31d3d780afbce6bd41236507310d074602d0e1969
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC7 10256 bytes
font_02_sfnt_off000081fb.bin
f0a8b786da721c7415a59d91fbce3b20bbb98ea32e48857ac1ff22d53b00ec29
pdf-font-stream PDF embedded font (sfnt) at offset 0x81FB 16144 bytes