Malicious PDF — malware analysis report

Static analysis result for SHA-256 d87bb73d63de827f…

MALICIOUS

PDF

43.0 KB Created: 2020-08-18 19:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ab7e19ab0c4eca452515667f5294bff SHA-1: 422417bc7cec362f26129983f7f35a82df719fd2 SHA-256: d87bb73d63de827f76813dc620c3697430dbc1e9fe59155dc9c06c470d7301e9
120 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'Buffalo airstation whr- hp- g54 manual' and the malicious URL, suggesting a lure to trick users into clicking the malicious link. The presence of numerous other PDF links further indicates a link farm strategy, likely to obscure the malicious destination.

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.com/pify?keyword=buffalo+airstation+whr-+hp-+g54+manual
    • http://files.associazionelaghitaninelmondo.com/uploads/1/3/0/7/130775232/bisimejo.pdf
    • http://vokanox.talltechteacher.com/uploads/1/3/2/3/132303382/vojobofok-juxobegoromut-gazol-gevepakilaloro.pdf
    • http://files.smarie94.co.uk/uploads/1/3/1/1/131164311/7233951.pdf
    • http://files.steppingstonetuition.com/uploads/1/3/1/6/131606901/lamijakotuzuzof.pdf
    • https://cdn.shopify.com/s/files/1/0432/5064/7202/files/careless_whisper_free_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/bibitupisuwezixazudajul.pdf
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/44470992957.pdf
    • https://cdn.shopify.com/s/files/1/0444/3154/0391/files/cambridge_igcse_geography_student_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/54609456376.pdf
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/kiwutib.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/29633238554.pdf
    • https://cdn.shopify.com/s/files/1/0433/4229/9295/files/4273552355.pdf
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/pafoguwakewim.pdf
    • https://cdn.shopify.com/s/files/1/0440/4133/9030/files/super_mario_sound_effects.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/lodobibunubavedazowibi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005251.bin
d8d6e2ca836fa003ccb88b072c4fde3f1e32c3744ed7c79aa9bdfa26dc1ee047
pdf-font-stream PDF embedded font (sfnt) at offset 0x5251 5700 bytes
font_01_sfnt_off000065ac.bin
c906036ceeda81f5986b059b124e5659a990e1dfdf67fd7874886e15526d1661
pdf-font-stream PDF embedded font (sfnt) at offset 0x65AC 9932 bytes
font_02_sfnt_off000087ae.bin
ebd57d2a71d2a95b03cf44eeaee6144b2d4f881d5528b25618ee60816730c40d
pdf-font-stream PDF embedded font (sfnt) at offset 0x87AE 16196 bytes