Malicious PDF — malware analysis report

Static analysis result for SHA-256 e24fbde3020594ef…

MALICIOUS

PDF

44.1 KB Created: 2020-08-14 02:33:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8107a92797f4e67f39ccd5c4ba3df4ad SHA-1: b458299086b3660c5bfa6dece0f0cceccf850a06 SHA-256: e24fbde3020594efe12d28f91d7064ca67f09687ec404880e137d799efd95775
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'ldpe foam sheet manufacturer' and a URL that aligns with the malicious redirector. The presence of a large link farm suggests an attempt to manipulate search engine results or distribute spam content.

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=ldpe+foam+sheet+manufacturer
    • http://kujot.armchairanthrotea.com/uploads/1/3/1/6/131637814/pewawilarituxu.pdf
    • http://files.goldwelldesigns.com/uploads/1/3/0/7/130776276/7861863.pdf
    • http://files.runonsentences.org/uploads/1/3/1/1/131163867/bebozibidumijir.pdf
    • https://cdn.shopify.com/s/files/1/0428/8308/8547/files/zizorowotix.pdf
    • https://cdn.shopify.com/s/files/1/0437/2620/9175/files/21299712479.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/o_mio_babbino_caro_score.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/fusodojolusufikopuzagag.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53940391871.pdf
    • https://cdn.shopify.com/s/files/1/0436/7358/3781/files/55393734326.pdf
    • https://cdn.shopify.com/s/files/1/0436/5520/0918/files/que_es_catalasa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7346/1669/files/wawofobezo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6151/files/clip_studio_paint_models.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/99301925727.pdf
    • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/datadazagixajiniwipafa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/the_sanford_guide_to_antimicrobial_therapy_2020_46th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/xuweniva.pdf
    • https://cdn.shopify.com/s/files/1/0444/0326/1606/files/bearing_capacity_of_rocks.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_off0000641d.bin
91eed1f56ae50257b2dba915841ad595df5db4d0288af306f10a2907183cfa43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x641D 5304 bytes
font_01_sfnt_off0000760d.bin
2540461021c1d1dd5ad2e873b7d2baabbec393564e57a4874c42cb0fa483ebcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x760D 14832 bytes

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