Malicious PDF — malware analysis report

Static analysis result for SHA-256 740b2475bbe3e32e…

MALICIOUS

PDF

33.7 KB Created: 2020-08-17 08:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 803f515385e935b7dd158fe6fbed120e SHA-1: 90af54af89d7433e249405bd2ada7376224e2b16 SHA-256: 740b2475bbe3e32eae4fca80421fce6ab0a25be9a6d7a398ac5e9edd03a42fda
162 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which in turn points to a link farm of other PDFs. The primary redirector URL is associated with malicious activity, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the target URL and references to 'Messenger lite apk pure', reinforcing the lure. No scripts were extracted, but the presence of multiple external links indicates an attempt to direct the user to potentially malicious content.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.ru/pify?keyword=messenger+lite++apk+pure In PDF document text
    • http://files.sittichai.com/uploads/1/3/2/6/132681713/zuzexujuwojugo_topazajizonim_xuzanepe.pdfIn PDF document text
    • http://files.mclewis63.com/uploads/1/3/1/4/131411539/9484429.pdfIn PDF document text
    • http://zutazofog.valweedonmbe.net/uploads/1/3/0/8/130813550/bivebetuzekut.pdfIn PDF document text
    • http://fomesos.myflamingheart.com/uploads/1/3/1/4/131406427/0baeb3614eb4.pdfIn PDF document text
    • http://pufajudir.capturedmemoriesbyc.com/uploads/1/3/2/6/132695615/8367574.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/1/0433/9869/3022/files/php_ip_address.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2430/8630/files/norikosapegemexuxive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/3018049083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/44508038942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/40855369427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9768/5157/files/kumazib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4073/5381/files/lexevujobutijuxivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/2444760337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gojifazuxosupimuron.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0484/5465/files/fitness_trampolin_bungen.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47E1 5056 bytes
SHA-256: bf0e90fc41018fce6a67ccb9d7d0942ac0cb7389e93d6e90e0ecb1f522c13dfc
font_01_sfnt_off00005928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5928 9652 bytes
SHA-256: 5e76ac94eb33dbef015a8a7709f786cf918947f36bac631e7aa9334fee3ea53c

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