Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ecd75eff69cdba…

MALICIOUS

PDF

60.9 KB Created: 2020-08-24 23:40:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b88dcde3851da14ad98c22eeaba53fe6 SHA-1: fc37019d36ebd4df3d6d80e3296cf1b4a0e07376 SHA-256: 14ecd75eff69cdbab0d0b1c443fe64ed7844c3c6db1e4877206c6df9a364ef83
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=tretyakov+gallery+guide'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a tactic to distribute content or traffic. The ML classifier also strongly flagged this PDF as malicious. Although no scripts were directly extracted, the presence of embedded URLs and the redirector heuristic strongly suggest a phishing or malware distribution attempt.

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.com/pify?keyword=tretyakov+gallery+guide
    • http://files.hannifanrealestate.com/uploads/1/3/0/8/130814475/zojen-gezuvivipi-moxotamo-zemimiwutakek.pdf
    • http://files.bonneygirlphotography.com/uploads/1/3/2/6/132681204/sapoxorufewodod.pdf
    • http://taridi.bsklartherapy.com/uploads/1/3/0/8/130814729/fisenivimova.pdf
    • http://files.islamiccenterdm.com/uploads/1/3/0/9/130969153/wetedadosaval.pdf
    • http://files.ruthmorganjones.co.uk/uploads/1/3/1/4/131453247/vixotezexajafisu.pdf
    • http://www.opentle.org
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/28796523951.pdf
    • https://cdn.shopify.com/s/files/1/0432/2938/0767/files/recurrent_spontaneous_abortion.pdf
    • https://cdn.shopify.com/s/files/1/0436/1083/3058/files/detopovogeneweva.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vozazugimutiwobawaxuleg.pdf
    • https://cdn.shopify.com/s/files/1/0431/6987/4082/files/magic_item_compendium.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/10504593204.pdf
    • https://cdn.shopify.com/s/files/1/0434/1687/9271/files/9011483621.pdf
    • https://cdn.shopify.com/s/files/1/0428/9547/4855/files/tuxevuxug.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/ballpen_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1058/files/ganesha_atharvashirsha.pdf
    • https://cdn.shopify.com/s/files/1/0461/5520/2723/files/85367316544.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://www.gnu.org/licenses/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000898a.bin
2ef368efd49a33245d4f2d0aece880de8379da06cfeb242e73a6ea7662ae2764		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x898A 13332 bytes
font_00_sfnt_off0000793c.bin
443536a9441bfc4f4cb09942f2b7e89def985c5da0e50994f820647a71d39b26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x793C 4768 bytes
font_02_sfnt_off0000aeba.bin
7c29a68edfc68c3707619b0bdf6da89d385261fb04aae0021c1626411983ffff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEBA 13064 bytes
font_03_sfnt_off0000d808.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD808 4324 bytes

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