Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf115916e171eea…

MALICIOUS

PDF

113.4 KB Created: 2020-08-18 13:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bee4faf21642a5ac22f65900c968a51e SHA-1: 24ce5cbd931edc545df2ef4c66ce72160831d9a3 SHA-256: aaf115916e171eea59a7ae7af998dc55db5fd12f7eefd12d559c817ec5765f4b
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=free+amharic+bible'. This suggests the document is designed to direct users to malicious sites. No scripts were extracted, but the PDF structure and link farm indicate a social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9918

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=free+amharic+bible
    • http://files.erinhallstudio.com/uploads/1/3/1/4/131482959/30d7c.pdf
    • http://files.andywalkerart.com/uploads/1/3/0/9/130970008/2051058.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/iata_city_code_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/convencin_de_ginebra_1958.pdf
    • https://cdn.shopify.com/s/files/1/0430/5967/5293/files/gamufobonuzimeko.pdf
    • https://cdn.shopify.com/s/files/1/0434/0881/8333/files/beleper.pdf
    • https://cdn.shopify.com/s/files/1/0437/9099/1521/files/buderus_plan_heizkrper.pdf
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/alaptrvny_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/4629/6982/files/jegite.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4808/files/jaweripituviko.pdf
    • https://cdn.shopify.com/s/files/1/0436/1378/2178/files/dilezimepazano.pdf
    • https://cdn.shopify.com/s/files/1/0438/1910/6466/files/la_pasion_segun_antigona_perez_luis_rafael_sanchez.pdf
    • https://cdn.shopify.com/s/files/1/0432/6631/0299/files/vernier_caliper_experiment_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/mazalodilofolajuwuzomisam.pdf
    • https://cdn.shopify.com/s/files/1/0428/6329/6678/files/rijelozajupixi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/xabutidiwulagofokeduzude.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 10

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007de5.bin
19f2d2f88d850d1bae479fda91ca47b0c62b0ff844d38e206379da9beb288a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE5 39448 bytes
font_01_sfnt_off0000e32e.bin
0a81ce0fd709c6b67366d25386e0e86376955b52611add4655a54c7825ecba1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE32E 8864 bytes
font_02_sfnt_off000100b9.bin
527b1515adf57db4f172f0219cb8ad2fcf43bc8c5003ac76167906d3c63a948c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100B9 4956 bytes
font_03_sfnt_off00011164.bin
7746277f0491600b9563c75960a11e000fda404644ddce14ca5549f07757c990		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11164 5484 bytes
font_04_sfnt_off00012310.bin
72211629e550b3520e05ecf99e0ae0d5f976c8f52791493b65a2b4fd9089a995		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12310 4896 bytes
font_05_sfnt_off000134f9.bin
de455705823839f0172f8942a67f6847e3d9fcf75f463e94b417bbeab10ba3c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134F9 4376 bytes
font_06_sfnt_off000140cf.bin
f582df376641aca78f6468bfa9aa473f319b7e19881778fab8840e3b80fbaa26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140CF 9116 bytes
font_07_sfnt_off00015a38.bin
00343ae7a762c98f0d4b9487b6b582b1df814396305041fdcd5289311db35cf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15A38 12884 bytes
font_08_sfnt_off000182d1.bin
5e919d8ed30de26f5c39ee1a7543aca0d1e00e962aebcf2cada2677bee501ec5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x182D1 19744 bytes
font_09_sfnt_off0001a35c.bin
949012317044e9c18bfc86017d256512bcc187d8310cfda4ee4c20fc8867b8e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A35C 4776 bytes

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