Malicious PDF — malware analysis report

Static analysis result for SHA-256 341115b00879bcac…

MALICIOUS

PDF

68.3 KB Created: 2020-08-22 06:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 995f4d10ff8419c2a152dcd1ea8a6f4f SHA-1: 6eab4c125c5dc218b584cc424a3b1eefb1bb63ef SHA-256: 341115b00879bcac351e6888b2f3b3adbc56faa77dcf452f9509ef0d4ab26a36
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, suggesting an attempt to lead the user to a malicious site. The document also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation or to obscure the malicious link. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document may be part of a multi-stage attack where a password is provided to decrypt a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=active+directory+services+pdf
    • http://files.pnwbumblebeeatlas.org/uploads/1/3/1/4/131452824/bajunifeba_risexenose_rifilegofedupo_begugitap.pdf
    • http://files.spiritwickcandleco.com/uploads/1/3/0/7/130775002/fewututebax.pdf
    • http://files.anabelarts.com/uploads/1/3/1/4/131438539/7017718.pdf
    • http://files.kumarivalentine.com/uploads/1/3/0/8/130874237/vovimiloxale_bapupiruz_wizati.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0449/8073/2062/files/happy_birthday_brother_song_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0431/9769/4114/files/28891380092.pdf
    • https://cdn.shopify.com/s/files/1/0430/0229/8521/files/40772708886.pdf
    • https://cdn.shopify.com/s/files/1/0436/0673/7053/files/l_anti_oedipe_capitalisme_et_schizophrnie.pdf
    • https://cdn.shopify.com/s/files/1/0433/1307/0238/files/robedapizoradizol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72645751706.pdf
    • https://cdn.shopify.com/s/files/1/0438/3526/1085/files/yamaha_cp-_30.pdf
    • https://cdn.shopify.com/s/files/1/0429/8906/0259/files/blouse_cutting_and_stitching_book.pdf
    • https://cdn.shopify.com/s/files/1/0452/6519/1073/files/infosys_campus_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0427/8432/5798/files/tufasevenog.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/84713817812.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/pugevabuwabusorutaso.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/basic_physics_formulas_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3799/0813/files/glossaire_comptable.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b1ca.bin
5972c2adcc6ffe26179ac9c3dac37227c6c0043717ff054ab0497952532324a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1CA 3072 bytes
font_01_sfnt_off0000bcc4.bin
eb002cd3fcaacddcedfebf4b20cdfe714520879a29ece684941b0882a1bb2e03		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC4 4740 bytes
font_02_sfnt_off0000cd00.bin
75d9182eaecd2f9e5efbbdf11695390a62d0ef5acff0bfbe278a8624f6578df6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD00 12472 bytes
font_03_sfnt_off0000f57b.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF57B 4324 bytes

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