Malicious PDF — malware analysis report

Static analysis result for SHA-256 9033442025fd4e0f…

MALICIOUS

PDF

51.8 KB Created: 2020-03-12 04:25:58 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: aacd09c2874b8b4ad39a3ec4ef291fb2 SHA-1: 4d0f8a4b3959a5bc749efff10fde67233d2f6e01 SHA-256: 9033442025fd4e0f6d59245ce20880a23d7b21cb4140d94d440931225e4121fa
150 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which are structured as a link farm. The document body, though heavily obfuscated, contains visible URLs that appear to be lures for downloading further content. The presence of PDF_SEO_LINK_FARM and PDF_SUSPICIOUS_LINK_LURE heuristics indicates a deliberate attempt to direct users to external, potentially malicious, resources. No scripts were extracted from this sample.

Heuristics 6

  • 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-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://three-ps-in-a-pod.com/uploads/1/3/0/4/130476085/130476085.html#ielts+listening+actual+test+vol+6
    • http://mta-sts.mx.commoncorekids.org/uploads/1/3/0/5/130590140/senimezekiju_tapezuzozar_renepuzatuvomu_jegonurugivadot.pdf
    • http://siberianhuskiesusa.com/uploads/1/3/0/5/130588482/3921119.pdf
    • http://onlinesecurityservice.site/uploads/1/3/0/6/130620877/gilakaf.pdf
    • http://betamixer.com/uploads/1/3/0/5/130544295/niwojotobudenekuz.pdf
    • http://kairos-sc-rci.com/uploads/1/3/0/3/130313346/midelisubuz_xabamabo_desesixada_sizinamoxekupo.pdf
    • http://natestreeservice.net/uploads/1/3/0/3/130379462/surokal-zefabop-rixevoto.pdf
    • http://www.fix-infotech.com/uploads/1/3/0/6/130605258/repuk_wazotaje.pdf
    • http://whodidiblow.com/uploads/1/3/0/7/130776609/woluzu_dejixi.pdf
    • http://www.juliaetraphotography.com/uploads/1/3/0/6/130621721/8010313.pdf
    • http://www.intentionaluxr.com/uploads/1/3/0/9/130969475/vezolekolit-tilimiwibo-bagan.pdf
    • http://www.miniturecowboysrus.com/uploads/1/3/0/7/130775758/kuwutesadu-lesugo-fowusapagezula-mobuzabikoni.pdf
    • http://mail.sarahgoetzskincare.com/uploads/1/3/0/7/130740264/xajigaxojeburuv.pdf
    • http://stellarorganizingsolutions.com/uploads/1/3/0/7/130776247/loredizuso_pivamimomob_kerubata.pdf
    • http://allenergyassociates.com/uploads/1/3/0/6/130621983/3eee08223.pdf
    • http://sijmit.com/uploads/1/3/0/5/130550731/26863997.pdf
    • http://hostmaster.firstimpressionsdaycare.com/uploads/1/3/0/3/130323222/bemuzedopite_badosazobafup_pogebe_nawowajax.pdf
    • http://thetrailstownhomes.com/uploads/1/3/0/2/130272877/be4b1ebc6a2350.pdf
    • http://macroveg.com/uploads/1/3/0/2/130287289/cb6e8.pdf
    • http://www.give-justice.com/uploads/1/3/0/3/130379625/5682406.pdf
    • http://ashbourne-and-daly.com/uploads/1/3/0/5/130546717/9846401.pdf
    • http://ninktat.com/uploads/1/3/0/4/130488583/6123723.pdf
    • http://wetlandecologybook.com/uploads/1/3/0/7/130776159/xagexagenavurof-kuxoxa.pdf
    • http://www.newlifeusara.com/uploads/1/3/0/6/130639546/rarisisupibupa_dilugedo_lufuvifejekij.pdf
    • http://www.iam-very-hungry.com/uploads/1/3/0/2/130272232/fowaked-xekupezijexit.pdf
    • http://classicsouthern.net/uploads/1/3/0/7/130776200/6401668.pdf
    • http://wetlandecolo
    • 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_off00007d9a.bin
a9a5714867eaf159de5f5f59cf0bd12747f650d1780b85ce854fafa211909841		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9A 11152 bytes
font_01_sfnt_off0000a133.bin
49519c12f22ee258931d06d79c004d07218638ad7f6de8a5eaa9a8c4594eb479		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA133 22820 bytes

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