Malicious PDF — malware analysis report

Static analysis result for SHA-256 1063e8ae421f3d6e…

MALICIOUS

PDF

48.6 KB Created: 2020-08-11 18:43:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44e4f28664b5e38258abc91f32ee582f SHA-1: d106e5e271398bf7ab2cb2441253bea7932739dd SHA-256: 1063e8ae421f3d6e6788dfe27b36771fd134ab4d0d4eb10c7e8f15d8b1e199e1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'common foods pdf'. The ML classifier also strongly flagged this PDF as malicious. The primary IOC is the redirector URL, which is likely used to funnel victims to a malicious site.

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/wb?keyword=satiety%20index%20of%20common%20foods%20pdf
    • http://files.winelovingfoodie.com/uploads/1/3/1/4/131483719/voxiritedoxenesuxov.pdf
    • http://files.lightningridgerealestate.com.au/uploads/1/3/0/7/130775154/migirudanozivov.pdf
    • http://files.truetolifephotography.com/uploads/1/3/1/4/131482931/d2605f.pdf
    • http://files.mgisalim.com/uploads/1/3/0/7/130776775/gepusosojigap_putija.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5010/6018/files/57158645035.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6090/files/newitonurerawik.pdf
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/tofewodaxexude.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/kiran_publication_bank_po_reasoning_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bujebunefevefosilipepeju.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/jibikuziravedagonudim.pdf
    • https://cdn.shopify.com/s/files/1/0432/5156/4707/files/you_thought_i_was_worth_saving_chords.pdf
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/cardiology_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/2217/0786/files/52219620481.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5029/files/inspect_edutyping_hack.pdf
    • https://cdn.shopify.com/s/files/1/0433/6232/0536/files/nidofikugomatixekov.pdf
    • https://cdn.shopify.com/s/files/1/0432/7958/1352/files/71497518484.pdf
    • https://cdn.shopify.com/s/files/1/0436/1073/4755/files/pabx_panasonic_catalogue.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f2e.bin
21ee98082c0c770b8a83d57d814ce412197ff8fd91694301c60621bcdcc3bcd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2E 5444 bytes
font_01_sfnt_off000091b1.bin
e537814a4dcd4fb8314e347546519018f84572c338b149a099f522560ead4df8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91B1 10560 bytes

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