Malicious PDF — malware analysis report

Static analysis result for SHA-256 23f55851bddea52c…

MALICIOUS

PDF

46.5 KB Created: 2020-08-22 12:38:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64cc352ace11fe41930e3c7e22f57f37 SHA-1: 654eab4fad252bf5be4df924d2d3c8ae4b9b6599 SHA-256: 23f55851bddea52cfd779e8db97b9e77dc1654f87f1aa11fea1474b633ff1c40
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body also contains the text 'Cv customer service template' and the same URL, suggesting a lure to trick users into clicking the link. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The primary malicious IOC is the redirector URL.

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.ru/pify?keyword=cv+customer+service+template
    • http://files.carlinvillefire.com/uploads/1/3/1/4/131483361/f57fc2f.pdf
    • http://pebule.championcleaning.net/uploads/1/3/1/3/131382134/8272b4cb409.pdf
    • http://files.groundwaterarts.com/uploads/1/3/0/7/130739945/eef7985.pdf
    • http://files.jppickens.com/uploads/1/3/0/7/130776393/3511963.pdf
    • http://files.okchomeinspectors.com/uploads/1/3/1/3/131382217/jesegomo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4819/6503/files/bahubali_2_cinema_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/4793/4357/files/thiruvannamalai_annamalaiyar_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44219577828.pdf
    • https://cdn.shopify.com/s/files/1/0441/1647/6056/files/simplifying_complex_rational_expressions_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78986196578.pdf
    • https://cdn.shopify.com/s/files/1/0440/0722/7542/files/bloody_roar_4_ppsspp_iso_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/9218/9089/files/55212092453.pdf
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/41316100662.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/ranukujate.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7073/files/88836211562.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/legend_animate_text_mod_apk.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_off00007927.bin
eef479e64ff6db2df41a10ce91a13663f81c14eae3ccdcb5934deea800cd1a74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7927 5044 bytes
font_01_sfnt_off00008a2f.bin
da1ac01ba21632fa11edcfd8e4dce4c356d926310cd14096aeec28152c323555		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2F 10228 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.