Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c45b4ccdb9654f6…

MALICIOUS

PDF

47.8 KB Created: 2020-08-05 10:46:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f4c40a77696fe7ce7f5788e41fd3a40 SHA-1: 50bca05a31a2b980eaa95bbe1963de8460752ae7 SHA-256: 1c45b4ccdb9654f6711c09d7c7787194f5c91468189e3db28fbd7dc026d54e67
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a language learning resource. The document body and heuristics indicate a link farm strategy, with many embedded URLs pointing to various PDF files, likely to manipulate search engine results or distribute further malicious content. The primary malicious URL is https://ttraff.com/pify?keyword=english+verbs+list+with+meaning+in+marathi+pdf, which is the most critical IOC.

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.com/pify?keyword=english+verbs+list+with+meaning+in+marathi+pdf
    • http://kadanu.poweroverparkinsons.org/uploads/1/3/0/7/130776487/gidibuxoguvo-dezerezuraja-tagiromew-fitofew.pdf
    • http://files.legacyhomerentals.com/uploads/1/3/1/4/131438676/moxefupi.pdf
    • http://files.lisacartlidge.co.uk/uploads/1/3/1/8/131857270/giwipusadutiro.pdf
    • http://files.gcshadesandblinds.com/uploads/1/3/1/3/131398424/dalalujidekudagewur.pdf
    • http://files.leaderboxessentials.com/uploads/1/3/2/6/132681625/rudavusidaguda.pdf
    • https://cdn.shopify.com/s/files/1/0438/4410/8453/files/branches_of_metaphysics_in_philosophy.pdf
    • https://cdn.shopify.com/s/files/1/0435/0279/6964/files/traitor_town_hack.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/shunting_yard_algorithm_java.pdf
    • https://cdn.shopify.com/s/files/1/0434/2264/6422/files/japajanifimarapugurot.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/9697443791.pdf
    • https://cdn.shopify.com/s/files/1/0431/7495/3120/files/koxajulixutesu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9817/7693/files/mia_mcreynolds_twitter.pdf
    • https://cdn.shopify.com/s/files/1/0429/5606/2876/files/44069552670.pdf
    • https://cdn.shopify.com/s/files/1/0433/4970/4854/files/93566701920.pdf
    • https://cdn.shopify.com/s/files/1/0437/9587/3949/files/suzuki_ltz_250_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/1961/5904/files/rihanna_ft_future_love_song_mp3_download.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_off000067c9.bin
74cbfd6ecb1cd1b3fca7528a5859f43b1c7c11e2c770c5dd3b337b2d0b177f06
pdf-font-stream PDF embedded font (sfnt) at offset 0x67C9 5704 bytes
font_01_sfnt_off00007b1f.bin
81c2573669ff6b3cdbec85c7dd2aa74ca2acd9bd6826c7364d5c3c276e8755b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1F 9892 bytes
font_02_sfnt_off00009d0a.bin
9d7c1d216dcdf0d78175e8ca36fd1d4f4a4dde5f79d4089b7535ba7e14b4b42c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0A 6128 bytes