Malicious PDF — malware analysis report

Static analysis result for SHA-256 039675dbf97ce7a2…

MALICIOUS

PDF

45.8 KB Created: 2020-08-11 17:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbbeaf72b80e060648364f346548ac88 SHA-1: ceefe3bd102cc3f031ea029a56e92846298e4878 SHA-256: 039675dbf97ce7a269ce331eaf1efd65753f09a08c887193765230b71c6e2e97
154 Risk Score

Malware Insights

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

The PDF contains a deceptive lure for a "PDF to word converter" that links to a known malicious redirector infrastructure. The document body and embedded links suggest an attempt to drive traffic to malicious sites, likely for further exploitation or phishing. The presence of numerous external links, many pointing to benign Shopify URLs but one to a known malicious redirector, indicates a link farm strategy to obscure the ultimate destination.

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.com/pify?keyword=pdf+to+word+converter+best+software+free+download
    • http://files.bagsofelegance.com/uploads/1/3/1/3/131398504/kenixer.pdf
    • http://files.awakening-spirit.net/uploads/1/3/2/8/132814342/mopuz.pdf
    • http://jaxix.alysongreenjewellery.com/uploads/1/3/0/8/130874359/9bbbf445ce2d2d.pdf
    • http://files.rietakeda.com/uploads/1/3/1/1/131164260/liwuzopopo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/5480/9759/files/27498518727.pdf
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/39666686246.pdf
    • https://cdn.shopify.com/s/files/1/0433/6317/2502/files/raw_karambwan_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0433/6241/8847/files/26091999113.pdf
    • https://cdn.shopify.com/s/files/1/0432/4202/9215/files/introduction_of_diazonium_salt.pdf
    • https://cdn.shopify.com/s/files/1/0433/5327/6574/files/xidofawazujidoduwuwu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/zisewebikegebalunexages.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/morotalulakawemaze.pdf
    • https://cdn.shopify.com/s/files/1/0432/0644/3176/files/warhammer_codex_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/3979/3050/files/66227038873.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/xuluzepexuvogobubuge.pdf
    • https://cdn.shopify.com/s/files/1/0447/8818/7293/files/derivative_all_formulas_download.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000682d.bin
fac59456b6d7220b5962fa82a86b550d202c50e62b14efa847db0bc40b52da85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x682D 5048 bytes
font_01_sfnt_off0000796c.bin
b080423633c140fcd833b2910391a4b9ae8386e8e21b6749ceaea2971d289596		 pdf-font-stream PDF embedded font (sfnt) at offset 0x796C 10096 bytes
font_02_sfnt_off00009bfb.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BFB 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.