Malicious PDF — malware analysis report

Static analysis result for SHA-256 29a567286253a018…

MALICIOUS

PDF

51.8 KB Created: 2020-08-14 06:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f75175783e016025870096651783194 SHA-1: fef60396e674ca8502c633d473850a6c820637ba SHA-256: 29a567286253a018ebcaf4575aa2d52cc7f8ce5a77a629203afa15930294ffb6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic identified a malicious redirector link, https://ttraff.cc/pify?keyword=free+rental+agreement+forms+pdf, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to 'free rental agreement forms pdf', suggesting a lure to trick users into clicking the malicious link. 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.cc/pify?keyword=free+rental+agreement+forms+pdf
    • http://files.alittlebirdie.co.za/uploads/1/3/1/8/131871648/kubaranotadav.pdf
    • http://files.ordernutsabouttella.com/uploads/1/3/1/4/131438308/2d8b63a98f363.pdf
    • http://files.valetridents.com/uploads/1/3/2/6/132681482/4852161.pdf
    • http://files.buffalozen.org/uploads/1/3/1/3/131384778/5892523.pdf
    • http://files.johnsclassiclures.com/uploads/1/3/2/7/132712323/893646.pdf
    • https://cdn.shopify.com/s/files/1/0434/0649/1797/files/6382303133.pdf
    • https://cdn.shopify.com/s/files/1/0431/6649/8965/files/makalah_akuntansi_pemerintah_daerah.pdf
    • https://cdn.shopify.com/s/files/1/0451/1229/5589/files/modern_hindu_baby_boy_names.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6165/files/kings_and_queens_lyrics_aerosmith.pdf
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/simple_recommendation_letter_sample.pdf
    • https://cdn.shopify.com/s/files/1/0448/3710/9917/files/los_libros_apocrifos_del_antiguo_testamento.pdf
    • https://cdn.shopify.com/s/files/1/0435/3405/7621/files/the_hungry_tide_by_amitav_ghosh_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6841/files/pofizowules.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/72534181598.pdf
    • https://cdn.shopify.com/s/files/1/0429/1641/3607/files/27499386062.pdf
    • https://cdn.shopify.com/s/files/1/0438/2962/4992/files/65771773718.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_off0000809e.bin
a1d3b4b728253d1a6d19c8c16df3c51ea7ce69952cfcdee4916383e6a9a7e022
pdf-font-stream PDF embedded font (sfnt) at offset 0x809E 5056 bytes
font_01_sfnt_off000091b5.bin
55d4f7dc2ba1d068310e9dead738dcdb8cd9bfa6d539371890a6db601d90da05
pdf-font-stream PDF embedded font (sfnt) at offset 0x91B5 10080 bytes
font_02_sfnt_off0000b438.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB438 4324 bytes