Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d1666467f29024…

MALICIOUS

PDF

42.6 KB Created: 2020-08-11 02:30:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21d93fbb8d44c3b4fb8b7f41d3380724 SHA-1: 1ba71a1208cdb998c9b7ad9d6fd787027dd409a4 SHA-256: 30d1666467f29024912158247d18d2f63c0d5e1ed5341dd3446cef0ce854f5bd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to an economic guide. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to malicious infrastructure, and PDF_SEO_LINK_FARM indicates a large number of external links, likely for SEO manipulation or to obscure the malicious destination. The ML classifier also strongly indicated maliciousness.

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=everyone+s+guide+to+the+south+african+economy+12th+edition+pdf
    • http://files.wendycharlton.net/uploads/1/3/0/8/130873783/xedenifogimuzefik.pdf
    • http://lajunerap.whaleswim-tonga.com/uploads/1/3/2/8/132814930/6738335.pdf
    • http://mumus.stevenmarkfriedman.com/uploads/1/3/1/4/131406749/vodutufomafem.pdf
    • http://niteti.nulineeducon.com/uploads/1/3/1/6/131607240/visejutisa_selinetilerexo_zizofenoxagire_josibaxan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23158701460.pdf
    • https://cdn.shopify.com/s/files/1/0427/6187/9719/files/ordem_hemiptera.pdf
    • https://cdn.shopify.com/s/files/1/0429/9368/0547/files/rexekagaximozixavidanifu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lovukapovilelogitolosir.pdf
    • https://cdn.shopify.com/s/files/1/0428/5811/9334/files/89295259930.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2167/files/76591365202.pdf
    • https://cdn.shopify.com/s/files/1/0436/8783/7849/files/advanced_vocabulary_synonyms.pdf
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/sierra_reloading_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/pdf_image_to_word_converter_online_free_without_email.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/2465634012.pdf
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/99511432627.pdf
    • https://cdn.shopify.com/s/files/1/0440/5736/2597/files/rabuwozijolexopotabajim.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/fititotokezemu.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064f7.bin
f35e226f385363d751e8c86d8e353d9a3e587d13d3a4824850d558e3a57ac7f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F7 5840 bytes
font_01_sfnt_off000078ca.bin
9acdb126562489af370cdf8846814a6ecf0277dd53c4649db18edccdb7271414		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78CA 10524 bytes

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