Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a1018c8024d7c4d…

MALICIOUS

PDF

44.0 KB Created: 2020-08-05 05:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b33baea16eb9f07033907bb95654194 SHA-1: 4d2bb52349baa55368b44f44696f6c8d556a8c90 SHA-256: 3a1018c8024d7c4d7e9214c260d91cd2db9bea1811a269ba466c4d59ed619d70
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm designed to distribute SEO-optimized PDF files. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=algebraic+equation+worksheets+pdf', suggesting a lure related to educational worksheets. 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.com/pify?keyword=algebraic+equation+worksheets+pdf
    • http://fefipovil.dmcihomecondos.com/uploads/1/3/1/3/131383648/pewem-tefepopan-gukamut-mimaviwokigilut.pdf
    • http://favozuz.mygodsighting.com/uploads/1/3/1/8/131856917/6315920.pdf
    • http://files.tdsministries.com/uploads/1/3/1/3/131383580/tutowirowal.pdf
    • http://files.ekosingers.com/uploads/1/3/0/8/130874333/veremezel_dazoluxe_beladalon.pdf
    • http://files.homelovethemakingofahome.com/uploads/1/3/0/8/130874489/e5a5cf65.pdf
    • https://cdn.shopify.com/s/files/1/0434/5276/0224/files/95150590307.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/57426121224.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/rexesebewolonose.pdf
    • https://cdn.shopify.com/s/files/1/0433/3800/6686/files/10757301325.pdf
    • https://cdn.shopify.com/s/files/1/0435/8438/9275/files/tizerirudilomidikufogadir.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8357/files/76162300960.pdf
    • https://cdn.shopify.com/s/files/1/0432/0736/0667/files/51538566199.pdf
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/14039907381.pdf
    • https://cdn.shopify.com/s/files/1/0430/5561/2058/files/munaruj.pdf
    • https://cdn.shopify.com/s/files/1/0432/1542/1599/files/peguluxivuvoxetatolap.pdf
    • https://cdn.shopify.com/s/files/1/0429/8440/7199/files/operations_research_applications_and_algorithms_4th_edition_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1559/files/dozovexediwekozis.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_off00005e05.bin
131eab6e1cc064f2e1aaf80554a33b23c94475821c2857666729250d950fc542
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E05 5708 bytes
font_01_sfnt_off00007169.bin
10e705696fccb1b24537f461a27fadd135e671f91bef3f87d8da9569f1bacddf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7169 9880 bytes
font_02_sfnt_off0000934f.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x934F 4324 bytes