Malicious PDF — malware analysis report

Static analysis result for SHA-256 5092b0339e7c068d…

MALICIOUS

PDF

41.1 KB Created: 2020-08-14 20:26:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbb7a1e66877048b043eaa4713cca0d2 SHA-1: 9ffa932045f92e5540fe8dd24e0d04bfe68e2881 SHA-256: 5092b0339e7c068de2734977771de297ff3575da7244b026e50d6dc9f69d0906
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, indicating a phishing or scam attempt. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK firing on 'https://ttraff.ru/pify?keyword=android+auto+mirror+4pda' strongly suggests malicious intent. The presence of a 'download button' lure further supports this, aiming to trick users into clicking the malicious link. No scripts were extracted, limiting the analysis to the document's structure and embedded links.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=android+auto+mirror+4pda
    • http://xojabu.jason-molloy.com/uploads/1/3/1/3/131379874/sepim_roralet_dorefefe_nigurew.pdf
    • http://files.thejohnbyrneblog.com/uploads/1/3/1/4/131437822/wakuramakuba-najojel-goxon.pdf
    • http://files.alyssadavisillustration.com/uploads/1/3/1/3/131381607/3d285cf8dbc28d.pdf
    • http://bukamukeb.nolimitcombatives.com/uploads/1/3/1/6/131606577/7817560.pdf
    • http://wivet.namioncampusuno.com/uploads/1/3/2/3/132302978/fefatur.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/3453888028.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93880590480.pdf
    • https://cdn.shopify.com/s/files/1/0433/2208/1448/files/69842135949.pdf
    • https://cdn.shopify.com/s/files/1/0434/0409/9740/files/68590258033.pdf
    • https://cdn.shopify.com/s/files/1/0439/0138/6920/files/guturusibibone.pdf
    • https://cdn.shopify.com/s/files/1/0428/3881/8982/files/45811238345.pdf
    • https://cdn.shopify.com/s/files/1/0436/9298/2427/files/canon_ip2700_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6911/files/children_s_short_bedtime_stories.pdf
    • https://cdn.shopify.com/s/files/1/0435/9523/5490/files/kakanul.pdf
    • https://cdn.shopify.com/s/files/1/0432/0614/8255/files/bavowefufakutugod.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_off0000642a.bin
a4ff65521256a8f90c1c48c62bc4dfa96b30b55504951a6d7b8832482e70ea89
pdf-font-stream PDF embedded font (sfnt) at offset 0x642A 4972 bytes
font_01_sfnt_off000074fa.bin
57e38e81889f796021dd0352d84c24a15bef8e15d744416336c2aa53543dcf51
pdf-font-stream PDF embedded font (sfnt) at offset 0x74FA 10240 bytes