Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9a9b26627acc46b…

MALICIOUS

PDF

44.3 KB Created: 2020-08-25 09:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d7e2057a12518d30a79bb3fdd22c2e9 SHA-1: 3497ef19a733a5d0ea927d368cf83facca71c6d4 SHA-256: f9a9b26627acc46b22ba0e520e1906d977a7b84ed2025e1c885bff65c0be7199
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to potentially malicious redirectors or SEO link farms. The primary malicious link identified is 'https://ttraff.cc/pify?keyword=alif+laila+full+episode+hd+video', which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to this URL and appears to be a lure for content related to 'alif laila full episode hd video'. The heuristic firings strongly indicate malicious redirection and a link farm strategy.

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.cc/pify?keyword=alif+laila+full+episode+hd+video
    • http://pazerezox.beasleyequineclinic.com/uploads/1/3/0/7/130738546/272436.pdf
    • http://tebuna.augustamaclean.com/uploads/1/3/1/3/131379179/lodelin.pdf
    • https://cdn.shopify.com/s/files/1/0438/1723/8685/files/steven_universe_season_2_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/education_board_result_marksheet_2018_jsc.pdf
    • https://cdn.shopify.com/s/files/1/0437/5419/3057/files/82398299030.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/80804151078.pdf
    • https://cdn.shopify.com/s/files/1/0438/2828/1506/files/vasare.pdf
    • https://cdn.shopify.com/s/files/1/0435/1046/4667/files/gakubexigavotikurejis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xovigaza.pdf
    • https://cdn.shopify.com/s/files/1/0434/4571/5109/files/garoripefipiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/7680/3990/files/92549580121.pdf
    • https://cdn.shopify.com/s/files/1/0462/0048/8089/files/internet_explorer_free_64_bit.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/canadian_universities_list.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/mutet.pdf
    • https://cdn.shopify.com/s/files/1/0428/8705/3475/files/criticism_of_logical_positivism.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049b3.bin
63bce8bb5c91dd1f3e8f8fbd69484b3142c5ebd06acdeee4c5d954745e48ebce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49B3 5084 bytes
font_01_sfnt_off00005afb.bin
727e3e59774abab5beb869b0089521ec0f5b6d408af484188974c5e385ae58d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFB 4492 bytes
font_02_sfnt_off0000696d.bin
3c64f8a0fd7fdbc5e8a82d43fc97e3dd604c8e1f29b2c7f4aa622b679a9eaa08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x696D 9372 bytes
font_03_sfnt_off0000891e.bin
bd0700fc98115b561d36f466217973ccdb4222789b08971265ac4fe8d964eb03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x891E 7400 bytes

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