Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8358212bb053ca8…

MALICIOUS

PDF

46.4 KB Created: 2020-08-19 22:51:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 702326ecb0adcde6238788cea52b16a9 SHA-1: 9318bcbc1ed1c4720359e7cfb519325e6d82c907 SHA-256: c8358212bb053ca8c6b8bf776657ff0c6a373e1d57e6a19d70b269323770f563
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, however, redirects through ttraff.com, a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'secure vpn free for windows 8', suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=secure+vpn+free++for+windows+8 In PDF document text
    • http://files.kingdomestablishmentministries.net/uploads/1/3/1/1/131163859/726128.pdfIn PDF document text
    • http://files.tonkabaynewfs.com/uploads/1/3/1/1/131164425/nuzat_winufivaru_wigokalo_migamuni.pdfIn PDF document text
    • http://files.beyondpromarketing.com/uploads/1/3/1/4/131407111/xomebomiwejawa.pdfIn PDF document text
    • http://xekiwatos.hifiaddiction.co.uk/uploads/1/3/1/1/131163927/5b82c4.pdfIn PDF document text
    • http://files.theirisproject.net/uploads/1/3/1/1/131164260/1006614.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/gmail_is_slow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/38611926486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2218/6653/files/burabulujixexifomed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/12460842801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/application_form_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/memawevipibuwosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/zatodavinisinesefidoben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/76047532947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6237/6101/files/misij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4371/5229/files/18030954156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8581/6217/files/44209626311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4903/1592/files/convert_into_word_document_online.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
🗂 Part of campaign: beyondpromarketing.com 5 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A6 5356 bytes
SHA-256: 7deaff472a39390288892ca0c280fa362a42c86e710cca551bb0eabe0612a554
font_01_sfnt_off00008a08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A08 10152 bytes
SHA-256: 4f5e9836648ee0631c767c38fd5c78cbc687d45a5dcd580ab4148e141f5d9f0b