Malicious PDF — malware analysis report

Static analysis result for SHA-256 240460022461e7a0…

MALICIOUS

PDF

41.9 KB Created: 2020-08-26 13:49:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27507779897d0bcf5f667b9a5be46ae2 SHA-1: fdb64f515480dbee740a3c91cd30603f20d7ad5b SHA-256: 240460022461e7a06a4ccbcf35a6c9b9a7a5d66b7af5689258b0dd0265a2f1c5
154 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body text, while heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=badinage+trumpet+pdf', suggesting a lure to a malicious site. The presence of numerous Shopify links, while some are benign, indicates a link farm strategy to obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.ru/pify?keyword=badinage+trumpet+pdf
    • http://files.ourladyoflourdesharrisonville.org/uploads/1/3/0/7/130776508/muzibakeratated.pdf
    • http://files.theedgesalontxk.com/uploads/1/3/0/9/130969431/3112499.pdf
    • http://rexopafu.monikaflanagan.com/uploads/1/3/0/8/130814328/logovujixovu.pdf
    • http://files.greenecountyunitedway.org/uploads/1/3/2/7/132710603/4796328.pdf
    • https://cdn.shopify.com/s/files/1/0434/7153/6285/files/10541684619.pdf
    • https://cdn.shopify.com/s/files/1/0431/7236/4437/files/15178687158.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.pdf
    • https://cdn.shopify.com/s/files/1/0434/4915/5746/files/zojejerukojitalib.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/wozagixafegigik.pdf
    • https://cdn.shopify.com/s/files/1/0431/7652/5988/files/buku_instrumen_akreditasi_puskesmas.pdf
    • https://cdn.shopify.com/s/files/1/0435/2235/9447/files/emerson_polling_bias.pdf
    • https://cdn.shopify.com/s/files/1/0434/0157/6602/files/tamil_monthly_calendar_2020_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4383/1464/files/answer_to_life_is_42_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/30337389292.pdf
    • https://cdn.shopify.com/s/files/1/0437/6811/9445/files/kafeworudadid.pdf
    • https://cdn.shopify.com/s/files/1/0434/2625/0901/files/77085988124.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/14490041284.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/38466120922.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000660f.bin
81af9bdf05c8784315008653ef6120e62de3884c56b47b24973947693d8f7d30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x660F 5200 bytes
font_01_sfnt_off000077a8.bin
00473e5ea947426321fe508d37a8c9ebe5990ad643abb0b91a227da73a08c414		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A8 10396 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.