Malicious PDF — malware analysis report

Static analysis result for SHA-256 706c80f2536f23e8…

MALICIOUS

PDF

53.1 KB Created: 2020-08-07 22:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d98766a0ebec22df1741425b5408401 SHA-1: 62c3103f04e7dc73c6f6cdc328bb4bb8dcf99e98 SHA-256: 706c80f2536f23e8e2bc7978a2e0a5a5287590caed35f0ea6a2607e2b2135254
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector, suggesting a phishing or scam attempt. The document body, though partially corrupted, contains text related to a magazine download, reinforcing the lure. The presence of many external links, including a large number of PDF links, indicates a link farm or SEO manipulation tactic to distribute malicious content.

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=bsc+magazine+january+2020+english+pdf+download
    • http://files.childrensmarketatthemill.com/uploads/1/3/1/4/131454733/zapupiw_gedax_tadukepukobixa.pdf
    • http://kaguwis.anetamigas.com/uploads/1/3/1/4/131407818/xakoliro_zuvajumiburak_rufajasexexika.pdf
    • http://files.stpauls-edison.org/uploads/1/3/1/4/131408415/nenubil-xuwemu-wugajonoweveka-keredurijuva.pdf
    • http://files.margerydeutsch.com/uploads/1/3/1/4/131406295/nozokazejos-gedomasitesen.pdf
    • http://files.bespokebrowsnyc.com/uploads/1/3/1/3/131381640/5549187.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0433/8047/4014/files/86342495977.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/79317101173.pdf
    • https://cdn.shopify.com/s/files/1/0432/2813/5591/files/73796048830.pdf
    • https://cdn.shopify.com/s/files/1/0433/3512/3102/files/5095800836.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/fumaxata.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/9788391418.pdf
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/fantasy_calendar_generator.pdf
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/xaxekerawonediden.pdf
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/12277226718.pdf
    • https://cdn.shopify.com/s/files/1/0434/8382/4294/files/94857157714.pdf
    • https://cdn.shopify.com/s/files/1/0428/9812/9062/files/rasavanizusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8812/5857/files/15616887605.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://scripts.sil.org/OFL
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006273.bin
217b3e985729505ae4389ad4b13c993e54df353108446436f543509fc1c60068		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6273 6212 bytes
font_01_sfnt_off0000778e.bin
d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280		 pdf-font-stream PDF embedded font (sfnt) at offset 0x778E 3720 bytes
font_02_sfnt_off000082f0.bin
9b6d81101f2c999aee0eb841cb8b150ea199a8a9f71d55289f544d95074ae892		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82F0 9888 bytes
font_03_sfnt_off0000a517.bin
d543d2463e9764d1417446f59b5409acb7ad1df63836d27c390c4f4c447420c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA517 9376 bytes

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